Cimolodonta
Encyclopedia
The Cimolodonta are a taxon of extinct mammals that lived from the Cretaceous
to the Eocene
. They were some of the more derived members of the extinct order
Multituberculata
. They probably lived something of a rodent
-like existence until their ecological niche
was assumed by true rodents. The more basal multituberculates are found in a different suborder, "Plagiaulacida
".
Cimolodonta is apparently a natural (monophyletic) suborder. Remains have been identified from across the Northern Hemisphere
. The taxon is recognized as the informal Paracimexomys group
and the superfamilies Djadochtatherioidea
, Taeniolabidoidea
, and Ptilodontoidea
. Additionally, and of uncertain affinities, are the families Cimolomyidae
, Boffiidae
, Eucosmodontidae
, Kogaionidae
, Microcosmodontidae
and the two genera Uzbekbaatar
and Viridomys
. More precise placement of these types awaits further discoveries and analysis.
Cretaceous
The Cretaceous , derived from the Latin "creta" , usually abbreviated K for its German translation Kreide , is a geologic period and system from circa to million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the...
to the Eocene
Eocene
The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...
. They were some of the more derived members of the extinct order
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
Multituberculata
Multituberculata
The Multituberculata were a group of rodent-like mammals that existed for approximately one hundred and twenty million years—the longest fossil history of any mammal lineage—but were eventually outcompeted by rodents, becoming extinct during the early Oligocene. At least 200 species are...
. They probably lived something of a rodent
Rodent
Rodentia is an order of mammals also known as rodents, characterised by two continuously growing incisors in the upper and lower jaws which must be kept short by gnawing....
-like existence until their ecological niche
Ecological niche
In ecology, a niche is a term describing the relational position of a species or population in its ecosystem to each other; e.g. a dolphin could potentially be in another ecological niche from one that travels in a different pod if the members of these pods utilize significantly different food...
was assumed by true rodents. The more basal multituberculates are found in a different suborder, "Plagiaulacida
Plagiaulacida
Plagiaulacida is a group of extinct multituberculate mammals. Multituberculates were among the most common mammals of the Mesozoic, "the age of the dinosaurs"...
".
Cimolodonta is apparently a natural (monophyletic) suborder. Remains have been identified from across the Northern Hemisphere
Northern Hemisphere
The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...
. The taxon is recognized as the informal Paracimexomys group
Paracimexomys group
The Paracimexomys group is a loose grade of extinct mammals which are known from the Lower Cretaceous and possibly through to the Paleocene of North America.They were members of an also extinct order called Multituberculata....
and the superfamilies Djadochtatherioidea
Djadochtatherioidea
Djadochtatherioidea is a group of extinct mammals known from the upper Cretaceous of Central Asia. They were members of an also extinct order called Multituberculata. These were generally small, somewhat rodent-like creatures, who scurried around during the "age of the dinosaurs". Unusually for...
, Taeniolabidoidea
Taeniolabidoidea
Taeniolabidoidea is a group of extinct mammals known from North America and Asia. They were the largest members of the also extinct order Multituberculata. Lambdopsalis even provides direct fossil evidence of mammalian fur in a fairly good state of preservation for a 60-million-year-old animal...
, and Ptilodontoidea
Ptilodontoidea
Ptilodontoidea is a group of extinct mammals from the Northern Hemisphere.They were generally small, somewhat rodent-like creatures of the extinct order Multituberculata.Some of these genera boast a great many species, though remains are generally sparse....
. Additionally, and of uncertain affinities, are the families Cimolomyidae
Cimolomyidae
Cimolomyidae is a family of fossil mammal within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and the Paleocene of North America and perhaps Mongolia. The family is part of the suborder Cimolodonta. Other than that, their systematic relationships are hard...
, Boffiidae
Boffius
Boffius is a genus of mammal from the Paleocene of Europe. It is a member of the extinct order of Multituberculata. It lies within the suborder Cimolodonta and is the only known member of the family Boffiidae . The genus was named by Vianey-Liaud M. in 1979.The species Boffius splendidus is known...
, Eucosmodontidae
Eucosmodontidae
Eucosmodontidae is a poorly preserved family of fossil mammals within the extinct order Multituberculata. Representatives are known from strata dating from the Upper Cretaceous through the Lower Eocene of North America, as well as the Paleocene to Eocene of Europe. The family is part of the...
, Kogaionidae
Kogaionidae
Kogaionidae is a family of fossil mammals within the extinct order Multituberculata. Representatives are known from the upper Cretaceous and the Paleocene of Europe. This family is part of the suborder Cimolodonta. Other than that, their systematic relationships are hard to define.These small...
, Microcosmodontidae
Microcosmodontidae
Microcosmodontidae is a poorly preserved family of fossil mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous though the Lower Paleocene of North America. The family is part of the suborder Cimolodonta...
and the two genera Uzbekbaatar
Uzbekbaatar
Uzbekbaatar is a genus of extinct mammal from the Upper Cretaceous of Uzbekistan. It was a member of the extinct order Multituberculata within the suborder Cimolodonta, though its further affinities are unclear. The genus was named by Kielan-Jaworowska Z. and Nesov L.A...
and Viridomys
Viridomys
Viridomys is a genus of extinct mammal from the Upper Cretaceous of North America. It was a member of the extinct order of Multituberculata, and lived during the Mesozoic, also known as the "age of the dinosaurs." It's within the suborder of Cimolodonta, though its further affinities are...
. More precise placement of these types awaits further discoveries and analysis.
Taxonomy
Suborder †Cimolodonta McKenna, 1975- Superfamily Incertae sedisIncertae sedis, is a term used to define a taxonomic group where its broader relationships are unknown or undefined. Uncertainty at specific taxonomic levels is attributed by , , and similar terms.-Examples:*The fossil plant Paradinandra suecica could not be assigned to any...
- Family Incertae sedisIncertae sedis, is a term used to define a taxonomic group where its broader relationships are unknown or undefined. Uncertainty at specific taxonomic levels is attributed by , , and similar terms.-Examples:*The fossil plant Paradinandra suecica could not be assigned to any...
- Subfamily Incertae sedisIncertae sedis, is a term used to define a taxonomic group where its broader relationships are unknown or undefined. Uncertainty at specific taxonomic levels is attributed by , , and similar terms.-Examples:*The fossil plant Paradinandra suecica could not be assigned to any...
- Genus? †AmeribaatarAmeribaatarAmeribaatar is an extinct mammal of the Late Cretaceous. It was a member of the also extinct order of Multituberculata. It lived in North America during the Mesozoic, also known as the "age of the dinosaurs". Whether it belongs to Plagiaulacida, Cimolodonta, or neither, is presently unclear...
Eaton & Cifelli, 2001- Species? †A. zofiae Eaton & Cifelli, 2001
- Genus? †BryceomysBryceomysBryceomys is an extinct mammal that lived during the late Cretaceous period and thus shared the world with dinosaurs. It was a member of the also extinct order of Multituberculata...
Eaton, 1995- Species †B. fumosus Eaton, 1995
- Species †B. hadrosus Eaton, 1995
- Species †B. intermedius Eaton & Cifelli, 2001
- Genus †CedaromysCedaromysCedaromys is an extinct mammal which lived during the Upper Cretaceous, at the same time as many dinosaurs. It was a member of the also extinct order of Multituberculata. It's within the suborder of Cimolodonta, and a possible member of the Paracimexomys group.The genus Cedaromys was named by...
Eaton & Cifelli, 2001- Species †C. bestia (Eaton & Nelson, 1991) Eaton & Cifelli, 2001 [=Paracimexomys? bestia Eaton & Nelson, 1991]
- Species †C. parvus Eaton & Cifelli, 2001
- Genus? †DakotamysDakotamysDakotamys is a genus of extinct mammal that lived during the Upper Cretaceous. It shared the world with dinosaurs. This small creature was a member of the also extinct order Multituberculata within the suborder Cimolodonta and was a member of the Paracimexomys group.The genus Dakotamys was named...
Eaton, 1995; E. Cret. CNA.- Species? †D. sp. (Utah, USA) Eaton, 1995
- Species †D. malcolmi Eaton, 1995
- Genus? †Fractimus Higgins, 2003
- Species? †F. palmorum Higgins, 2003
- Genus †Halodon Marsh, 1889
- Species †H. serratus Marsh, 1889
- Genus †PtilodusPtilodusPtilodus is a genus of mammals from the extinct order of Multituberculata, and lived during the Paleocene in North America.Ptilodus was a relatively large multituberculate of in length, which is about the same size as a squirrel...
(Marsh, 1889) Gidley, 1909- Species †P. serratus (Marsh, 1889) Gidley, 1909
- Genus? †UzbekbaatarUzbekbaatarUzbekbaatar is a genus of extinct mammal from the Upper Cretaceous of Uzbekistan. It was a member of the extinct order Multituberculata within the suborder Cimolodonta, though its further affinities are unclear. The genus was named by Kielan-Jaworowska Z. and Nesov L.A...
Kielan-Jaworowska & Nesov, 1992- Species? †U. kizylkumensis Kielan-Jaworowska & Nesov, 1992
- Genus? †BarbatodonBarbatodonBarbatodon is a mammal genus from the Upper Cretaceous period. It lived in Transylvania at the same time as some of the last dinosaurs and was a member of the extinct order of Multituberculata. It is within the suborder of Cimolodonta, and the family Kogaionidae. The genus Barbatodon was named by...
Rãdulescu & Samson, 1986- Species? †B. transylvanicum Rãdulescu & Samson, 1986
- Genus? †Ameribaatar
- Subfamily Incertae sedis
- Family Incertae sedis
- Paracimexomys groupParacimexomys groupThe Paracimexomys group is a loose grade of extinct mammals which are known from the Lower Cretaceous and possibly through to the Paleocene of North America.They were members of an also extinct order called Multituberculata....
Archibald, 1982-
-
- Genus †ParacimexomysParacimexomysParacimexomys is a genus of extinct mammals in the also extinct Multituberculata order. Paracimexomys lived during the Cretaceous period. The few fossils remains come from North America. Some Romanian fossils were also tentatively assigned to this genus, though that classification now seems...
Archibald, 1982- Species? †P. crossi Cifelli, 1997
- Species? †P. magnus (Sahni, 1972) Archibald, 1982 [Cimexomys magnus Sahni, 1972]
- Species? †P. magister (Fox, 1971) Archibald, 1982 [Cimexomys magister Fox, 1971]
- Species? †P. perplexus Eaton & Cifelli, 2001
- Species? †P. robisoni Eaton & Nelson, 1991
- Species? †P. priscus (Lillegraven, 1969) Archibald, 1982 [Cimexomys priscus Lillegraven, 1969; genotipo Paracimexomys sensu Eaton & Cifelli, 2001]
- Species †P. propriscus (Lillegraven, 1969) Hunter et Al., 2010
- Genus? CimexomysCimexomysCimexomys is an extinct North American mammal that lived from the Upper Cretaceous to the Paleocene. For a while, it shared the world with dinosaurs, but outlived them. It was a member of the extinct order Multituberculata and lies within the suborder Cimolodonta...
Fox, 1971- Species? †C. antiquus Fox, 1971
- Species? †C. gregoryi Eaton, 1993
- Species? †C. electus
- Species? †C. bellus
- Species? †C. clarki
- Species? †C. judithae Sahni, 1972 [Paracimexomys? judithae (Sahni, 1972) Archibald, 1982]
- Genus CimexomysCimexomysCimexomys is an extinct North American mammal that lived from the Upper Cretaceous to the Paleocene. For a while, it shared the world with dinosaurs, but outlived them. It was a member of the extinct order Multituberculata and lies within the suborder Cimolodonta...
Sloan & Van Valen, 1965 sensu stricto?- Species? †C. arapahoensis
- Species †C. minor Sloan & Van Valen, 1965
- Species? †C. gratus (Jepson, 1930) Lofgren, 1995 [Cimexomys hausoi Archibald, 1983; Eucosmodon gratus Jepson, 1930; Mesodma? ambigua? Jepson, 1940; Stygimus gratus (Jepson, 1930)]
- Genus †Paracimexomys
-
- Family †BoffidaeHahn & Hahn, 1983
-
- Genus †BoffiusBoffiusBoffius is a genus of mammal from the Paleocene of Europe. It is a member of the extinct order of Multituberculata. It lies within the suborder Cimolodonta and is the only known member of the family Boffiidae . The genus was named by Vianey-Liaud M. in 1979.The species Boffius splendidus is known...
Vianey-Liaud, 1979- Species †Boffius splendidus Vianey-Liaud, 1979 [Boffiidae Hahn & Hahn, 1983 sensu Kielan-Jaworowska & Hurum, 2001]
- Genus †Boffius
-
- Family CimolomyidaeCimolomyidaeCimolomyidae is a family of fossil mammal within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and the Paleocene of North America and perhaps Mongolia. The family is part of the suborder Cimolodonta. Other than that, their systematic relationships are hard...
Marsh, 1889 sensu Kielan-Jaworowska & Hurum, 2001-
- Genus EssonodonEssonodonEssonodon is a mammal genus from the Upper Cretaceous of North America. It was a member of the extinct order Multituberculata and lived towards the end of the "age of the dinosaurs." It is within the suborder Cimolodonta and perhaps the family Cimolomyidae.The genus Essonodon was named by Simpson...
Simpson, 1927- Species? †E. browni Simpson, 1927 [cimolodontidae? Kielan-Jaworowska & Hurum (2001)]
- Genus BuginbaatarBuginbaatarBuginbaatar is an extinct genus of mammal from the Upper Cretaceous of Mongolia. It is a member of the extinct order Multituberculata, within the suborder Cimolodonta and family Cimolomyidae. It lived towards the end of the Mesozoic era....
Kielan-Jaworowska & Sochava, 1969- Species? †B. transaltaiensis Kielan-Jaworowska & Sochava, 1969
- Genus MeniscoessusMeniscoessusMeniscoessus is a genus of extinct mammal from the Upper Cretaceous Period of what is now North America. It lived toward the end of the "age of the dinosaurs" and was a member of the extinct order Multituberculata. It lies within the suborder Cimolodonta and family Cimolomyidae.The genus...
Cope, 1882 [Dipriodon Marsh, 1889, Tripriodon Marsh, 1889, Selenacodon Marsh, 1889, Halodon Marsh, 1889, Oracodon Marsh, 1889]- Species †M. caperatus Marsh, 1889
- Species †M. collomensis Lillegraven, 1987
- Species †M. ferox Fox, 1971a
- Species †M. intermedius Fox, 1976b
- Species †M. major (Russell, 1936)
- Species †M. greeni
- Species †M. conquistus Cope, 1882
- Species †M. robustus (Marsh, 1889)
- Species †M. seminoensis Eberle & Lillegraven, 1998a
- Species †M. borealis [M. robustus]
- Genus †CimolomysCimolomysCimolomys is a mammal genus from the Upper Cretaceous of North America. It was a member of the extinct order Multituberculata within the suborder Cimolodonta and family Cimolomyidae.The genus Cimolomys was named by Othniel Charles Marsh in 1889...
Marsh, 1889 [=? Allacodon Marsh, 1889; Meniscoessus; Ptilodus; Selenacodon Marsh, 1889]- Species? †C. lentus [Allacodon lentus]
- Species? †C. pumilus [Allacodon pumilus]
- Species †C. clarki Sahni, 1972
- Species †C. gracilis Marsh, 1889 [Cimolomys digona Marsh, 1889; Meniscoessus brevis; Ptilodus gracilis Osborn, 1893; Selenacodon brevis Marsh, 1889]
- Species †C. trochuus Lillegraven, 1969
- Species †C. milliensis Eaton, 1993a
- Species †C. sp.2
- Genus Essonodon
-
-
- Superfamily PtilodontoideaPtilodontoideaPtilodontoidea is a group of extinct mammals from the Northern Hemisphere.They were generally small, somewhat rodent-like creatures of the extinct order Multituberculata.Some of these genera boast a great many species, though remains are generally sparse....
Cope, 1887 sensu McKenna & Bell, 1997 e Kielan-Jaworowska & Hurum, 2001- Family CimolodontidaeCimolodontidaeCimolodontidae is a family of fossil mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and Paleocene of North America. There is some doubt as to whether Cimolodon is within this taxon. If not, the name of the family would still be valid...
Marsh, 1889 sensu Kielan-Jaworowska & Hurum, 2001-
- Genus †LiotomusLiotomusLiotomus is a genus of extinct mammal from the Paleocene epoch . It lived in Europe and North America, and was a member of the extinct order Multituberculata, lying within the suborder Cimolodonta and possibly the family Cimolodontidae....
Lemoine, 1882- Species? †L. marshi (Lemoine, 1882) Cope, 1884 [Neoctenacodon marshi Lemoine, 1882?] [eucosmodontidae? McKenna & Bell, 1997]
- Genus †EssonodonEssonodonEssonodon is a mammal genus from the Upper Cretaceous of North America. It was a member of the extinct order Multituberculata and lived towards the end of the "age of the dinosaurs." It is within the suborder Cimolodonta and perhaps the family Cimolomyidae.The genus Essonodon was named by Simpson...
Simpson, 1927- Species? †E. browni Simpson, 1927 [cimolomyidae? Kielan-Jaworowska & Hurum (2001)]
- Genus †AnconodonAnconodonAnconodon is an extinct genus of mammal from the Paleocene of North America, and thus lived just after the "age of the dinosaurs". It was a member of the extinct order Multituberculata within the suborder Cimolodonta and possibly the family Cimolodontidae....
Jepsen, 1940- Species? †A. lewisi (Simpson, 1935)
- Species †A. rarus
- Species †A. russelli Sloan, 1987
- Species †A. gibleyi (Simpson, 1935)
- Species †A. cochranensis (Russell, 1929) [Liotomus russelli (Simpson, 1935); Ectopodon cochranensis Russell, 1967]
- Genus †CimolodonCimolodonCimolodon is a genus of mammal from the Upper Cretaceous of North America. It was a member of the extinct order of Multituberculata within the suborder Cimolodonta and possibly the family Cimolodontidae....
Marsh, 1889 [Nanomys Marsh, 1889, Nonomyops Marsh, 1892]- Species †C. electus
- Species †C. nitidus Marsh, 1889 [Allacodon rarus Marsh, 1892 sensu Clemens, 1964a; Nanomys minutus Marsh, 1889; Nonomyops minutus (Marsh, 1889) Marsh, 1892]
- Species †C. parvus
- Species †C. similis Fox, 1971
- Species †C. gracilis Marsh, 1889
- Species †C. sp.2
- Genus NeoliotomusNeoliotomusNeoliotomus is a genus of North American mammal from the Paleocene. It existed in the age immediately following the extinction of the last dinosaurs and was a member of the extinct order Multituberculata. It lies within the suborder Cimolodonta and the superfamily Ptilodontoidea...
Jepsen, 1930- Species †N. conventus Jepsen, 1930
- Species †N. ultimus (Granger & Simpson, 1928)
- Genus †Liotomus
-
- Family PtilodontidaePtilodontidaePtilodontidae is a family of primitive mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and Paleocene of North America....
Cope, 1887 sensu McKenna & Bell, 1997- Subfamily NeoplagiaulacidaeNeoplagiaulacidaeNeoplagiaulacidae is a family of mammal within the extinct order Multituberculata. Fossil remains are known from the Upper Cretaceous through the Eocene. Representatives have been found in North America, Europe and Asia....
Ameghino, 1890 [Ptilodontidae: Neoplagiaulacinae Ameghino, 1890 sensu McKenna & Bell, 1997]- Genus MesodmaMesodmaMesodma is an extinct genus of mammal, a member of the extinct order Multituberculata within the suborder Cimolodonta, family Neoplagiaulacidae. It lived during the upper Cretaceous and Paleocene Periods of what is now North America...
Marsh, 1889- Species? †Mesodma sp.1, cf. M. formosa
- Species? †Mesodma sp.2, cf. M. formosa
- Species? †Mesodma sp.3, cf. M. formosa
- Species? †Mesodma sp.4
- Species? †Mesodma sp.5
- Species? †M. hensleighi
- Species? †M. senecta
- Species? †M. garfieldensis Archibald, 1982
- Species? †M. pygmaea Sloan, 1987
- Species †M. formosa (Marsh, 1889) [Halodon formosus Marsh, 1889??]
- Species †M. primaeva [Perectypodus primaeva]
- Species †M. thompsoni Clemens, 1964
- Species †M. ambigua Jepsen, 1940 [†Mesodma. sp.4, cf. Mesodma thompsoni??]
- Species †M. siberlingi (Simpson, 1935) [Ectypodus?; Mimetodon?]
- Genus Ectypodus Matthew & Cranger, 1921 [Charlesmooria Kühne, 1969 ]
- Species? †E. childei (Kühne, 1969)
- Species? †E. simpsoni (Jepsen, 1930)
- Species? †E. elaphus Scott, 2005
- Species †E. aphronorus Sloan, 1981
- Species †E. szalayi Sloan, 1981
- Species †E. musculus Matthew & Granger, 1921
- Species †E. powelli Jepsen, 1940
- Species †E. tardus (Jepsen, 1930)
- Genere MimetodonMimetodonMimetodon is a small mammal from the Paleocene of North America and perhaps Europe. It was a member of the extinct order Multituberculata within the suborder Cimolodonta and family Neoplagiaulacidae....
Jepsen, 1940- Species †M. krausei Slaon, 1981
- Species †M.? nanophus (Holtzman, 1978) [Neoplagiaulax nanophus Holtzman, 1978]
- Species †M. trovessortianus
- Species †M. churchilli Jepsen, 1940
- Species †M. douglassi
- Genus NeoplagiaulaxNeoplagiaulaxNeoplagiaulax is a mammal genus from the Paleocene of Europe and North America. In the case of the latter continent, there may possibly be some slightly earlier, Upper Cretaceous material too. It existed in the age immediately following the extinction of the last dinosaurs...
Lemoine, 1882- Species †N. nanophus Holtzman, 1978
- Species †N. nelsoni Sloan, 1987
- Species †N. mckennai Sloan, 1987 [N. mckennaiai Sloan, 1987 (lapsus calami)]
- Species †N. jepi Sloan, 1987
- Species †N. annae Vianey-Liaud, 1986
- Species †N. fractus Dorr, 1952
- Species †N. nicolai Vianey-Liaud, 1986
- Species †N. macintyrei Slaon, 1981
- Species †N. hazeni (Jepsen, 1940)
- Species †N. sp. cf. N. hazeni Krause, 1977, e Fox, 1990
- Species †N. paskapooensis Scott, 2005 [Neoplagiaulax hunteri Krishtalka, 1973 (in partim); Neoplagiaulax sp. 2 Fox, 1990]
- Species †N. cimolodontoides Scott, 2005 [Neoplagiaulax sp. 3 Fox, 1990]
- Species †N. macrotomeus (Wilson, 1956)
- Species †N. copei Lemoine, 1885
- Species †N. eocaenus (Lemoine, 1880) [genotipo]
- Species †N. grangeri (Simpson, 1935)
- Species? †N. serrator Scott, 2005 [N. hunteri Krishtalka, 1973 (in partim); N. sp. 1 Fox, 1990]
- Species †N. kremnus Johnston & Fox, 1984
- Species †N. sp. cf. N. hunteri (Simpson, 1936)
- Species †N. hunteri (Simpson, 1936)
- Genus †ParectypodusParectypodusParectypodus is a genus of extinct mammal that lived from the Paleocene to the Eocene of North America. Some of the known fossil material may also be from the Upper Cretaceous. It was named by G.L. Jepsen in 1930....
Jepsen, 1930- Species? †P. lovei Sloan, 1966
- Species? †P. vanvaleni Sloan, 1981
- Species? †P. corystes Scott, 2003
- Species †P. sloani Schiebout, 1974
- Species †P. trovessartianus (Cope, 1882) [P. trouessarti; Ptilodus; Mimetodon; Neoplagiaulax]
- Species †P. sylviae (Rigsby, 1980) [Ectypodus sylviae Rigby, 1980]
- Species †P. pattersoni Sloan, 1987
- Species †P. armstrongi Johnston & Fox, 1984
- Species †P. sinclairi (Simpson, 1935)
- Species †P. laytoni Jepsen, 1940
- Species †Parectypodus simpsoniP. simpsoni
- Genus †Carnaysia Vianey-Liaud, 1986
- Species †C. manueli Vianey-Liaud, 1986
- Species †C. davidi Vianey-Liaud, 1986
- Genus †KrauseiaKrauseiaKrauseia is an extinct genus of small mammal from the Paleocene of North America. It was a member of the extinct order Multituberculata and is within the suborder of Cimolodonta, family Neoplagiaulacidae. The genus was nemed by Vianey-Liaud M. in 1986, and has also partly been known under the name...
Vianey-Liaud, 1986- Species †K. clemensi (Sloan, 1981) [Parectypodus clemensi Sloan, 1981]
- Genus †XironomysRigby, 1980
- Species †X. swainae Rigby, 1980 [Xyronomys; ?Eucosmodontidae]
- Genus †Xancolomys Rigby, 1980
- Species †X. mcgrewiRigby, 1980
- Genus †MesodmopsMesodmopsMesodmops is a genus of small mammal from the Eocene of China. It was a late member of the extinct order of Multituberculata. It's within the suborder of Cimolodonta and family Neoplagiaulacidae. The genus was named by Y. Tong and T. Wang in 1994....
Tong & Wang, 1994- Species †M. dawsonae Tong & Wang, 1994
- Genus Mesodma
- Subfamily PtilodontidaePtilodontidaePtilodontidae is a family of primitive mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and Paleocene of North America....
Cope, 1887 [Ptilodontidae: Ptilodontinae Cope, 1887 sensu McKenna & Bell, 1997]- Genus †KimbetohiaKimbetohiaKimbetohia is a genus of mammals from the extinct order Multituberculata. It lived from the Upper Cretaceous to the Paleocene in the United States. The genus was named by the paleontologist George Gaylord Simpson, in 1936 . Kimbetohia has also been called Kimbetohi.- K...
Simpson, 1936- Species †K. cambi [Granger, Gregory & Colbert in Matthew, 1937, or Simpson, 1936]
- Species †K. sp. cf. K. cambi
- Genus †PtilodusPtilodusPtilodus is a genus of mammals from the extinct order of Multituberculata, and lived during the Paleocene in North America.Ptilodus was a relatively large multituberculate of in length, which is about the same size as a squirrel...
Cope, 1881 [Chirox Cope, 1884]- Species? †P. fractus
- Species †P. tsosiensis Sloan, 1981
- Species †P. kummae Krause, 1977
- Species †P. ferronensis Gazin, 1941
- Species †P. gnomus Scott, Fox & Youzwyshyn, 2002 [cf. Ectypodus hazeni (Jepsen, 1940) Gazin, 1956]
- Species †P. mediaevus Cope, 1881 [Ptilodus plicatus (Cope, 1884); Chirox plicatus Cope, 1884]
- Species †P. nellieae
- Species †P. sinclairi
- Species †P. montanus Douglass, 1908 [P. gracilis Gidley, 1909; P. admiralis Hay, 1930]
- Species †P. wyomingensis Jepsen, 1940
- Genus †BaiotomeusBaiotomeusBaiotomeus is a genus of mammals from the extinct order of Multituberculata. It is known from the Paleocene of North America.The genus Baiotomeus was formally named by Krause in 1987 , and has also been known as Mimetodon , Neoplagiaulax , and Ptilodus .- B...
Krause, 1987- Species †B. russelli Scott, Fox & Youzwyshyn, 2002
- Species †B. douglassi (Simpson, 1935) [Ptilodus; Mimetodon; Neoplagiaulax]
- Species †B. lamberti Krause, 1987
- Species †B. rhothonion Scott, 2003
- Genus †ProchetodonProchetodonProchetodon is a genus of mammals from the extinct order Multituberculata. It lived during the Upper Paleocene and the Lower Eocene in North America. The genus was formally named by G. L. Jepsen in 1940. - P. cavus :...
Jepsen, 1940- Species? †P. speirsae Scott, 2004
- Species †P. cavus Jespen, 1940
- Species †P. foxi Krause, 1987
- Species †P. taxus Krause, 1987
- Species? †P. sp. cf. P. cavus Jespen, 1940
- Genere †KogaionidaeKogaionidaeKogaionidae is a family of fossil mammals within the extinct order Multituberculata. Representatives are known from the upper Cretaceous and the Paleocene of Europe. This family is part of the suborder Cimolodonta. Other than that, their systematic relationships are hard to define.These small...
Rãdulescu & Samson, 1996- Species †K. ungureanui Rãdulescu & Samson, 1996
- Genus †HaininaHaininaHainina is an extinct mammal genus from the Upper Cretaceous to the Paleocene of Europe. Though small, it outsurvived the final dinosaurs.- Genus :...
Vianey-Liaud, 1979- Species †H. belgica Vianey-Liaud, 1979
- Species †H. godfriauxi Vianey-Liaud, 1979
- Species †H. pyrenaica Peláez-Campomanes, López-Martínez, Álvarez-Sierra & Daams, 2000
- Species †H. vianeyae Peláez-Campomanes, López-Martínez, Álvarez-Sierra & Daams, 2000
- Genus †Kimbetohia
- Subfamily EucosmodontidaeEucosmodontidaeEucosmodontidae is a poorly preserved family of fossil mammals within the extinct order Multituberculata. Representatives are known from strata dating from the Upper Cretaceous through the Lower Eocene of North America, as well as the Paleocene to Eocene of Europe. The family is part of the...
Jepsen, 1940 sensu Kielan-Jaworowska & Hurum, 2001 [Eucosmodontidae: Eucosmodontinae Jepsen, 1940 sensu McKenna & Bell, 1997]- Genus †ClemensodonClemensodonClemensodon is a genus of extinct mammal from the Upper Cretaceous of North America. It lived during the end of the Mesozoic, also known as the "age of the dinosaurs". It was a member of the extinct order of Multituberculata within the suborder of Cimolodonta and family Eucosmodontidae...
Krause, 1992- Species †C. megaloba Krause, 1992 [Kimbetohia cambi, in partim]
- Genus †EucosmodonEucosmodonEucosmodon is a genus of extinct mammal from the Paleocene of North America. It is a member of the extinct order of Multituberculata within the suborder of Cimolodonta, and the family Eucosmodontidae. This genus has partly also been known as Neoplagiaulax...
Matthew & Granger, 1921- Species? †E. gratus Jepsen, 1940 [= Stygimys gratus??]
- Species †E. primus [Granger & Simpson, 1929 or Sloan, 1981]
- Species †E. americanus (Cope, 1885)
- Species †E. molestus (Cope, 1869) [1886?] [Neoplagiaulax molestus Cope, 1869]
- Genus †StygimysStygimysStygimys is an extinct mammal genus from the Upper Cretaceous and Paleocene of North America. It was a member of the extinct order Multituberculata within the suborder Cimolodonta, family Eucosmodontidae....
Sloan & Van Valen, 1965- Species †S. camptorhiza Johnston & Fox, 1984
- Species †S. gratus (Jepsen, 1930)
- Species? †S. sp. cf. S. kuszmauli
- Species †S. kuszmauli [Eucosmodon kuszmauli]
- Species †S. jepseni (Simpson, 1935) [S. sp. cf. S. kuszmauli]
- Species †S. teilhardi (Granger & Simpson, 1929)
- Genus †Clemensodon
- Subfamily MicrocosmodontidaeMicrocosmodontidaeMicrocosmodontidae is a poorly preserved family of fossil mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous though the Lower Paleocene of North America. The family is part of the suborder Cimolodonta...
Holtzman & Wolberg, 1977 [Eucosmodontidae: Microcosmodontinae Holtzman & Wolberg, 1977 sensu McKenna & Bell, 1997]- Genus †PentacosmodonPentacosmodonPentacosmodon is a mammal genus from the Paleocene of North America, so it lived somewhat after the "age of the dinosaurs". It was a member of the extinct order Multituberculata. It's within the suborder Cimolodonta and family Microcosmodontidae....
Jepsen, 1940- Species †P. pronus Jepsen, 1940 [Djadochtatheroid? (Kielan-Jaworowska & Hurum, 2001)]
- Genus †AcheronodonAcheronodonAcheronodon is a genus of herbivorous arboreal mammal which belongs to the family Microcosmodontidae and which was endemic to North America during the Early Paleocene subepoch and in existence for approximately ....
Archibald, 1982- Species †A. garbani Archibald, 1982
- Genus †MicrocosmodonMicrocosmodonMicrocosmodon is a mammal genus from the Paleocene of North America. It was a member of the extinct order Multituberculata, and lies within the suborder Cimolodonta and family Microcosmodontidae. The genus Microcosmodon was named by G.L. Jepsen in 1930.- Species :The species Microcosmodon arcuatus...
Jepsen, 1930- Species †M. conus Jepsen, 1930
- Species †M. rosei Krause, 1980
- Species †M. arcuatus Johnston & Fox, 1984
- Species †M. woodi Holtzman & Wolberg, 1977 [Eucosmodontine?]
- Species †M. harleyi Weil, 1998
- Genus †Pentacosmodon
- Subfamily Neoplagiaulacidae
- Family Cimolodontidae
- Superfamily Djadochtatheroidea Kielan-Jaworowska & Hurum, 1997 sensu Kielan-Jaworowska & Hurum, 2001[Djadochtatheria Kielan-Jaworowska & Hurum, 1997]
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- Genus? †BulganbaatarBulganbaatarBulganbaatar is a Central Asian mammal genus from the Upper Cretaceous. It existed in the company of dinosaurs. This animal was a member of the extinct order Multituberculata. It's within the suborder Cimolodonta and is a member of the superfamily Djadochtatherioidea. The genus Bulganbaatar was...
Kielan-Jaworowska, 1974- Species? †B. nemegtbaataroides Kielan-Jaworowska, 1974
- Genus? †ChulsanbaatarChulsanbaatarChulsanbaatar is a genus of mammal from the Cretaceous of Mongolia. It lived during the Mesozoic, also known as the "age of the dinosaurs." This small creature was a member of the extinct order of Multituberculata and is within the suborder Cimolodonta. The genus Chulsanbaatar was named by...
Kielan-Jaworowska, 1974- Species? †C. vulgaris Kielan-Jaworowska, 1974 [Chulsanbaataridae]] Kielan-Jaworowska, 1974
- Genus †NemegtbaatarNemegtbaatarNemegtbaatar is a genus of mammal from the Upper Cretaceous Period of what is now Mongolia. It existed in the company of much larger dinosaurs, found together in the Nemegt Basin. This creature was a member of the extinct order Multituberculata...
Kielan-Jaworowska, 1974- Species? †N. gobiensis Kielan-Jaworowska, 1974
- Genus? †Bulganbaatar
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- Family SloanbaataridaeSloanbaataridaeSloanbaataridae is a family of fossil mammals within the extinct order Multituberculata. Remains are known from the Upper Cretaceous of Mongolia. These small herbivores lived during the "age of the dinosaurs". This family is part of the suborder Cimolodonta. The family Sloanbaataridae was named by...
Kielan-Jaworowska, 1974-
- Genus †KamptobaatarKamptobaatarKamptobaatar is a Mongolian mammal genus from the Upper Cretaceous. It lived at the same time as the later dinosaurs. This animal was a member of the extinct order Multituberculata within the suborder Cimolodonta and family Sloanbaataridae....
Kielan-Jaworowska, 1970- Species? †K. kuczynskii Kielan-Jaworowska, 1970
- Genus †NessovbaatarNessovbaatarNessovbaatar is a genus of extinct mammal from the Upper Cretaceous of Mongolia. It eked out its living in the company of Central Asian dinosaurs. This animal was a member of the extinct order Multituberculata within the suborder Cimolodonta and family Sloanbaataridae.The genus Nessovbaatar was...
Kielan-Jaworowska & Hurum, 1997- Species †N. multicostatus Kielan-Jaworowska & Hurum, 1997
- Genus †SloanbaatarSloanbaatarSloanbaatar is a mammal genus that lived in Mongolia during the Upper Cretaceous. It lived at the same time as the dinosaurs. This animal was a member of the also extinct order Multituberculata within the suborder Cimolodonta and the family Sloanbaataridae.The genus Sloanbaatar was named by...
Kielan-Jaworowska, 1974- Species †S. mirabilis Kielan-Jaworowska, 1974 [Sloanbaatarinae]
- Genus †Kamptobaatar
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- Family DjadochtatheriidaeDjadochtatheriidaeDjadochtatheriidae is a family of fossil mammals within the extinct order Multituberculata. Remains are known from the Upper Cretaceous of Central Asia. These animals lived during the Mesozoic, also known as the "age of the dinosaurs." This family is part of the suborder of Cimolodonta. The taxon...
Kielan-Jaworowska $ Hurum, 1997-
- Genus †DjadochtatheriumDjadochtatheriumDjadochtatherium is a mammal genus that lived in Mongolia during the Upper Cretaceous. It coexisted with some of the late dinosaurs. This animal was a member of the extinct order of Multituberculata. It's within the suborder of Cimolodonta, and a member of the family Djadochtatheriidae. It was...
Simpson, 1925- Species †D. matthewi Simpson, 1925
- Genus †CatopsbaatarCatopsbaatarCatopsbaatar is an extinct genus of mammal that lived in Mongolia during the Upper Cretaceous Period. It coexisted with some of the late dinosaurs. This animal was a member of the extinct order Multituberculata within the Suborder Cimolodonta and family Djadochtatheriidae.The genus Catopsbaatar...
Kielan-Jaworowska, 1974- Species †C. catopsaloides (Kielan-Jaworowska, 1974) Kielan-Jaworowska, 1994 [Djadochtatherium catopsaloides Kielan-Jaworowska, 1974 ; Catopsalis catopsaloides (Kielan-Jaworowska, 1974) Kielan-Jaworowska & Sloan, 1979]
- Genus †TombaatarTombaatarTombaatar is a mammal genus that existed during the Mongolian Upper Cretaceous Period. It co-existed with some of the late dinosaurs. This animal was a member of the extinct order Multituberculata, within the suborder Cimolodonta and family Djadochtatheriidae. The genus Tombaatar was named by...
Kielan-Jaworowska, 1974- Species †T. sabuli Rougier, Novacek & Dashzeveg, 1997
- Genus †KryptobaatarKryptobaatarKryptobaatar and also known as Gobiaatar, Gobibaatar or Tugrigbaatar is an extinct mammalian genus dating from the Upper Cretaceous Period and identified in Central Asia...
Kielan-Jaworowska, 1970 [Gobibaatar Kielan-Jaworowska, 1970 , Tugrigbaatar Kielan-Jaworowska & Dashzeveg, 1978]- Species †K. saichanensis Kielan-Jaworowska & Dashzeveg, 1978 [Tugrigbaatar saichaenensis Kielan-Jaworowska & Dashzeveg, 1978??]
- Species †K. dashzevegi Kielan-Jaworowska, 1970
- Species †K. mandahuensis Smith, Guo & Sun, 2001
- Species †K. gobiensis Kielan-Jaworowska, 1970 [Gobibaatar parvus Kielan-Jaworowska, 1970 ]
- Genus †Djadochtatherium
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- Superfamily TaeniolabidoideaTaeniolabidoideaTaeniolabidoidea is a group of extinct mammals known from North America and Asia. They were the largest members of the also extinct order Multituberculata. Lambdopsalis even provides direct fossil evidence of mammalian fur in a fairly good state of preservation for a 60-million-year-old animal...
Granger & Simpson, 1929 sensu Kielan-Jaworowska & Hurum, 2001- Family Taeniolabididae Granger & Simpson, 1929
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- Genus †CatopsalisCatopsalisCatopsalis is a genus of extinct mammal from the Paleocene of North America, though some Canadian finds may be upper Cretaceous. This animal was a relatively large member of the extinct order of Multituberculata. Most Multituberculates were much smaller....
Cope, 1882- Species †C. alexandri Middleton, 1982
- Species †C. collariensis
- Species †C. joyneri Sloan & Van Valen, 1965
- Species †C. matthewi
- Species †C. waddleae Buckley, 1995
- Species †C. calgariensis Russell, 1926
- Species †C. fissidens (Cope, 1884)
- Species †C. foliatus Cope, 1882
- Species †C. utahensis Gazin, 1939
- Genus †PrionessusPrionessusPrionessus is a genus of extinct mammal from the Paleocene of Central Asia. It was a member of the extinct order Multituberculata within the suborder Cimolodonta and superfamily Taeniolabidoidea. The genus was named by Matthew W.D. and Granger W. in 1925 and is based on a single species.The species...
Matthew & Granger, 1925- Species †P. lucifer Matthew & Granger, 1925
- Genus †LambdopsalisLambdopsalisLambdopsalis is a genus of mammal from the Paleocene of China. This animal was a relatively large member of the extinct order Multituberculata. It is placed within the suborder Cimolodonta and is a member of the superfamily Taeniolabidoidea....
Chow & Qi, 1978- Species †L. bulla Chow & Qi, 1978
- Genus †SphenopsalisSphenopsalisSphenopsalis is a genus of extinct mammal from the Paleocene of Central Asia. It was a member of the extinct order Multituberculata, and lies within the suborder Cimolodonta and the superfamily Taeniolabidoidea. The genus was named by William Diller Matthew, W...
Matthew, Granger & Simpson, 1928- Species †S. nobilis Matthew, Granger & Simpson, 1928
- Genus †TaeniolabisTaeniolabisTaeniolabis is a genus of extinct mammal from the Paleocene of North America. It is the largest known member of the extinct order Multituberculata, reaching weights of perhaps 30 kg. It is within the suborder of Cimolodonta and is a member of the superfamily Taeniolabidoidea. The genus was named...
Cope, 1882- Species †T. lamberti Simmons, 1987
- Species †T. taoensis (Cope, 1882)
- Genus †Catopsalis
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- Family Taeniolabididae Granger & Simpson, 1929