. It is a subdivision of the
and encompasses the time from 125.0 ± 1.0 Ma to 112.0 ± 1.0 Ma (million years ago), approximately. The Aptian succeeds the
. The original
is in the vicinity of Apt. The Aptian was introduced in scientific literature by French palaeontologist
The base of the Aptian stage is laid at magnetic anomaly M0r. A global reference profile for the base (a GSSP) had in 2009 not yet been appointed. The top of the Aptian (the base of the Albian) is at the first appearance of
Sometimes the Aptian is subdivided in three substages or subages: Bedoulian (early or lower), Gargasian (middle) and Clansayesian (late or upper).
†AnkylosauriaAnkylosauria is a group of herbivorous dinosaurs of the order Ornithischia. It includes the great majority of dinosaurs with armor in the form of bony osteoderms. Ankylosaurs were bulky quadrupeds, with short, powerful limbs. They are first known to have appeared in the early Jurassic Period of...
of the Aptian |
| Taxa |
Presence |
Location |
Description |
Images |
- †Cedarpelta
Cedarpelta is an extinct genus of basal ankylosaurid ankylosaur, based on material recovered from the Lower Cretaceous of North America. The skull lacks extensive cranial ornamentation, a trait which has been interpreted as plesiomorphic for ankylosaurs....
- †Cedarpelta bilbeyhallorum
|
|
Cedar Mountain FormationThe Cedar Mountain Formation is the name given to distinctive sedimentary rocks in eastern Utah that occur between the underlying Morrison Formation and overlying Naturita Formation . It is composed of non-marine sediments, that is, sediments deposited in rivers, lakes and on flood plains...
, Utah, USA |
|
|
- †Gobisaurus
Gobisaurus is an extinct genus of basal ankylosaurid ankylosaur from the Upper Cretaceous Ulansuhai Formation of China. The holotype consists of a skull and as yet undescribed postcranial remains. It was first named by Matthew K. Vickaryous, Anthony P. Russell, Philip J...
- †Gobisaurus domoculus
|
|
Ulansuhai Formation The Ulansuhai Formation is a geological formation in Inner Mongolia, north China. Dinosaur remains are among the fossils that have been recovered from the formation....
, Inner Mongolia, China |
|
|
†Liaoningosaurus Liaoningosaurus is a very unusual ankylosaur from the Lower Cretaceous. The holotype IVPP V12560 , an essentially complete juvenile skeleton compressed on a slab, was collected from the Yixian Formation of Liaoxi, Yixian County, Liaoning Province, People's Republic of China.The type species...
†Liaoningosaurus paradoxus |
|
Yixian FormationThe Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period...
, Liaoning, China |
Nodosaurid with ventral armor plating |
†MinmiMinmi, named after Minmi Crossing, Australia , is a genus of small ankylosaurian dinosaur that lived during the early Cretaceous Period, about 119 to 113 million years ago. The type species, M. paravertebra, was described by Ralph Molnar in 1980...
†Minmi paravertebra |
|
Bungil Formation The Bungil Formation is a geological formation in Australia whose strata date back to the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.-Vertebrate paleofauna:-References:...
, Queensland, Australia |
Small (1 meter long) primitive ankylosaur |
†SauropeltaSauropelta is a genus of nodosaurid dinosaur that existed in the Early Cretaceous Period of North America. One species has been named although others may have existed. Anatomically, Sauropelta is one of the most well-understood nodosaurids, with fossilized remains recovered in the U.S. states of...
†Sauropelta edwardsorum |
Aptian to AlbianThe Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
|
Cloverly FormationThe Cloverly Formation are Lower Cretaceous strata located in Montana and Wyoming, in the western United States. The term now includes strata that had formerly been called the Dakota Formation in central and southern Wyoming.-Members:...
, Wyoming, Montana, Utah, USA |
A medium-sized nodosaurid, measuring about 5 meters (16.5 ft) long, Sauropelta had a distinctively long tail which made up about half of its body length. Its neck and back were protected by an extensive bony body armor including characteristically large spines |
|
†Shamosaurus Shamosaurus is an extinct genus of basal ankylosaurid ankylosaur from Early Cretaceous deposits of Höövör, Mongolia. Shamosaurus is known from the holotype PIN N 3779/2 complete skull and jaw and the paratypes include partial skeleton remains and an armor. It was collected from the...
†Shamosaurus scutatus |
|
Mongolia |
Ankylosaurid |
†CeratopsiaCeratopsia or Ceratopia is a group of herbivorous, beaked dinosaurs which thrived in what are now North America, Europe, and Asia, during the Cretaceous Period, although ancestral forms lived earlier, in the Jurassic. The earliest known ceratopsian, Yinlong downsi, lived between 161.2 and 155.7...
of the Aptian |
| Taxa |
Presence |
Location |
Description |
Images |
- †Archaeoceratops
Archaeoceratops, meaning "ancient horned face", is a genus of basal neoceratopsian dinosaur from the Early Cretaceous of north central China. It appears to have been bipedal and quite small with a comparatively large head...
- †Archaeoceratops oshimai
|
|
Mazong Shan The Mazong Shan is a minor mountain range of northern Gansu, between the Altay range to the north and the Qilian range to the south. The Mazong Shan peak rises to 2584 m....
, Gansu, China |
A basal neoceratopsian, appears to have been bipedal and quite small (about 1 meter long) with a comparatively large head. Unlike many later ceratopsians it doesn't have any horns and has only a small bony frill projecting from the back of its head. |
|
- †Auroraceratops
Auroraceratops, meaning "dawn horned face", is a genus of basal neoceratopsian dinosaur, from the Early Cretaceous of north central China...
- †Auroraceratops rugosus
|
|
Xinminbao GroupThe Xinminbao Group is a group of geological formations in north central China. They occur across a large depression between the Altai mountains of Mongolia to the north and the Qilian mountains of the Qinghai Plateau to the south, in the Gonpoquan and Suanjingze basins, and also in the...
, Gansu, China |
Basal neoceratopsian |
†PsittacosaurusPsittacosaurus is a genus of psittacosaurid ceratopsian dinosaur from the Early Cretaceous Period of what is now Asia, about 130 to 100 million years ago. It is notable for being the most species-rich dinosaur genus...
†Psittacosaurus meileyingensis
†Psittacosaurus mongoliensis |
|
China, Mongolia, Russia |
Psittacosaurid Ceratopsian |
|
†Serendipaceratops Serendipaceratops is a dubious genus of ornithischian dinosaur from the early Cretaceous Period of Australia.The type species, S. arthurcclarkei, was named after Arthur C...
†Serendipaceratops arthurcclarkei |
|
Victoria, Australia |
2 meters long early ceratopsian |
| Mammals of the Hauterivian |
| Taxa |
Presence |
Location |
Description |
Images |
- Eobaatar
Eobaatar is a genus of extinct mammal from the Lower Cretaceous of Mongolia and Spain. It was a member of the also extinct order Multituberculata, and lived at the same time as some dinosaurs. It lies within the suborder Plagiaulacida and family Eobaataridae. The genus Eobaatar was named by...
|
several species from Hauterivian to AlbianThe Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
|
Spain, Mongolia |
|
|
- Jeholodens
Jeholodens was a primitive mammal belonging to the Triconodonta family, and which lived in present-day China during the Middle Cretaceous about 125 million years ago....
|
|
Yixian FormationThe Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period...
, Liaoning, China |
A long-tailed, nocturnal tetrapod (with prensile fingers and toes) which hunted insects, its food, during the night |
RepenomamusRepenomamus is the largest mammal known from the Cretaceous period of Manchuria, and it is the mammal for which there is the best evidence that it fed on dinosaurs. It is not possible to determine if Repenomamus actively hunted live dinosaurs or scavenged dead dinosaurs.-Paleobiology:Repenomamus...
|
|
Yixian FormationThe Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period...
, Liaoning, China |
The largest mammal known from the Cretaceous period of the Mesozoic, and the one for which there is the best evidence that it fed on dinosaurs. |
|
Teinolophos Teinolophos trusleri was a prehistoric species of monotreme, or egg-laying mammal. It is known from a lower jawbone found in Flat Rocks, Victoria, Australia. It lived during the Aptian age of the Lower Cretaceous. It is the earliest known relative of the Platypus.The species name honours the...
|
|
Flat Rocks, Victoria, Australia |
The earliest known monotreme. |
YanoconodonYanoconodon is a monotypic genus of extinct early mammal whose representative species Yanoconodon allini lived 125 million years ago during the Mesozoic in what is now China. It is considered to be a transitional fossil due to the formation of its middle ear, which is a cross between those of...
|
|
Yixian FormationThe Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period...
, Hebei, China |
A small mammal, barely 13 centimetres (5 inches) long. It was lightly built and fed on insects, worms and other invertebrates, probably hunting at night. Like most early mammals, Yanoconodon had short, sprawling legs and claws that were most likely used for burrowing underground or digging |
| †Ornithopoda of the Aptian |
| Taxa |
Presence |
Location |
Description |
Images |
- †Atlascopcosaurus
Atlascopcosaurus is a genus of herbivorous basal euornithopod dinosaur from the Early Cretaceous of the present Australia....
- †Atlascopcosaurus loadsi
|
Aptian/AlbianThe Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
|
Dinosaur Cove Not to be confused with the children's book series of the same name.Dinosaur Cove in Victoria, Australia is a fossil bearing site in south-east of the continent where the Otway Ranges meet the sea to the west of Cape Otway, adjacent to Great Otway National Park .The inaccessible ocean-front cliffs...
, Victoria, Australia |
2-3 meters long hypsilophodont |
|
- †Changchunsaurus
Changchunsaurus is an extinct genus of small herbivorous ornithopod dinosaur from Early Cretaceous deposits of Gongzhuling, Jilin, China. It is the first named dinosaur genus from Jilin.-Description:...
- †Changchunsaurus parvus
|
|
Quantou Formation The Quantou Formation is a Mesozoic geologic formation. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.-See also:* List of dinosaur-bearing rock formations...
, Jilin, China |
As a small basal ornithopod, Changchunsaurus would have been a swift bipedal herbivore, feeding close to the ground. |
†DollodonDollodon is a genus of ornithopod dinosaur that lived in the Barremian and possibly the early Aptian ages of the Early Cretaceous Period of Europe. Its remains are known from Belgium , England and possibly Germany...
†Dollodon bampingi |
BarremianThe Barremian is an age in the geologic timescale between 130.0 ± 1.5 Ma and 125.0 ± 1.0 Ma). It is a subdivision of the Early Cretaceous epoch...
-?Aptian |
Bernissart Bernissart is a Walloon municipality located in the Belgian province of Hainaut. On January 1, 2006 Bernissart had a total population of 11,458. The total area is 43.42 km², which gives a population density of 264 inhabitants per km²....
, Belgium; ?England; ?Germany |
A lightly constructed iguanodont, about 6 meters long (20 ft), estimated to weigh about 1 ton |
|
†Equijubus Equijubus, meaning "horse mane" after the area in which it was found, is a genus of herbivorous hadrosauroid dinosaur from the Early Cretaceous of northwestern China.-Discovery and naming:...
†Equijubus normani |
|
Mazong Shan The Mazong Shan is a minor mountain range of northern Gansu, between the Altay range to the north and the Qilian range to the south. The Mazong Shan peak rises to 2584 m....
, Gansu, China |
Primitive hadrosaur or iguanodont |
|
†Iguanodon Iguanodon is a genus of ornithopod dinosaur that lived roughly halfway between the first of the swift bipedal hypsilophodontids and the ornithopods' culmination in the duck-billed dinosaurs...
†Iguanodon bernissartensis |
|
Asia, Europe, North America |
Worldwide distributed, type genus of the Iguanodontia. 10 meters long |
†LurdusaurusLurdusaurus is a genus of large ornithopod dinosaur which lived in the Aptian stage of the Early Cretaceous, sometime between 121 to 112 million years ago.-Discovery and naming:...
†Lurdusaurus arenatus |
|
Niger |
9 meters long heavily built Iguanodont |
†MantellisaurusMantellisaurus is a genus of dinosaur formerly known as Iguanodon atherfieldensis. The new genus was erected by Gregory Paul in 2007. According to Paul, it is more lightly built than Iguanodon and more closely related to Ouranosaurus, making Iguanodon in its traditional sense paraphyletic. It is...
†Mantellisaurus atherfieldensis |
|
Atherfield, England, UK |
formerly known as Iguanodon atherfieldensis |
†OuranosaurusOuranosaurus is an unusual genus of herbivorous iguanodont dinosaur that lived during the early Cretaceous about 110 million years ago in what is now Africa. Ouranosaurus measured about seven to eight meters long...
†Ouranosaurus nigeriensis |
|
Echkar Formation, Niger |
7 meters long hadrosauroid, possibly with a sail on the back |
|
†Planicoxa Planicoxa is a genus of advanced iguanodontian dinosaur from the Early Cretaceous of North America. It is known from the partial skeletons of several individual specimens. Its fossils were discovered in Utah and South Dakota, United States....
†Planicoxa venenica
†Planicoxa depressa |
|
Cedar Mountain FormationThe Cedar Mountain Formation is the name given to distinctive sedimentary rocks in eastern Utah that occur between the underlying Morrison Formation and overlying Naturita Formation . It is composed of non-marine sediments, that is, sediments deposited in rivers, lakes and on flood plains...
, Utah; Lakota FormationThe Lakota Formation is a sequence of rocks from the Barremian epoch from Western North America. Located in South Dakota, the name is derived from the Lakota Native American tribe....
, South Dakota, USA |
A genus of advanced iguanodont |
†QantassaurusQantassaurus is a genus of two-legged, plant-eating ornithischian dinosaur that lived in Australia about 115 million years ago, when the continent was still partly south of the Antarctic Circle...
†Qantassaurus intrepidus |
|
Victoria, Australia |
1.8 meter long hypsilophodontid |
|
†Siluosaurus Siluosaurus is a genus of ornithopod dinosaur from the Barremian-Albian-age Lower Cretaceous Xinminbao Group of Gansu, China. It is based on IVPP V.11117 , two teeth...
†Siluosaurus zhanggiani |
|
Xinminbao GroupThe Xinminbao Group is a group of geological formations in north central China. They occur across a large depression between the Altai mountains of Mongolia to the north and the Qilian mountains of the Qinghai Plateau to the south, in the Gonpoquan and Suanjingze basins, and also in the...
, Gansu, China |
A hypsilophodontid or other basal ornithopod, Siluosaurus would have been a bipedal herbivore. |
†TenontosaurusTenontosaurus is a genus of medium- to large-sized ornithopod dinosaur. The genus is known from the late Aptian to Albian ages of the middle Cretaceous period sediments of western North America, dating between 115 to 108 million years ago...
†Tenontosaurus tilletti
†Tenontosaurus dossi |
|
Cloverly FormationThe Cloverly Formation are Lower Cretaceous strata located in Montana and Wyoming, in the western United States. The term now includes strata that had formerly been called the Dakota Formation in central and southern Wyoming.-Members:...
, Wyoming and Montana, Antlers FormationThe Antlers Formation occurs as a band of strata from Arkansas through southern Oklahoma into northeastern Texas. It consists of 150 m of silty to sandy mudstones, fine- to coarse grained sandstones that are poorly to moderately sorted and cemented with clay or calcium carbonate...
, Oklahoma, Twin Mountains FormationThe Twin Mountains Formation, also known as the Twin Mountain Formation, is a sedimentary rock formation, within the Trinity Group, found in Texas of the United States of America. It is a terrestrial formation of Aptian age , and is notable for its dinosaur fossils...
, Texas, USA |
8 meters long early iguanodont |
†TheiophytaliaTheiophytalia is a genus of herbivorous iguanodontian dinosaur from the lower Cretaceous period of Colorado.-Etymology:...
†Theiophytalia kerri |
Aptian to AlbianThe Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
|
Purgatoire Formation, Colorado, USA |
An iguanodont described as intermediate in derivation between CamptosaurusCamptosaurus is a genus of plant-eating, beaked ornithischian dinosaurs of the Late Jurassic period of western North America. The name means 'flexible lizard', ....
and IguanodonIguanodon is a genus of ornithopod dinosaur that lived roughly halfway between the first of the swift bipedal hypsilophodontids and the ornithopods' culmination in the duck-billed dinosaurs...
|
|
†Zephyrosaurus Zephyrosaurus is a genus of hypsilophodont ornithopod dinosaur. It is based on a partial skull and postcranial fragments discovered in the Aptian-Albian-age Lower Cretaceous Cloverly Formation of Carbon County, Montana...
†Zephyrosaurus schaffi |
|
Cloverly FormationThe Cloverly Formation are Lower Cretaceous strata located in Montana and Wyoming, in the western United States. The term now includes strata that had formerly been called the Dakota Formation in central and southern Wyoming.-Members:...
, Montana, USA |
Hypsilophodont |
†PlesiosaursPlesiosauria is an order of Mesozoic marine reptiles. Plesiosaurs first appeared in the Early Jurassic Period and became especially common during the Jurassic Period, thriving until the K-T extinction at the end of the Cretaceous Period.The name "plesiosaur" is used to refer to the order...
of the Aptian |
| Taxa |
Presence |
Location |
Description |
Images |
- †Brachauchenius
Brachauchenius is an extinct genus of pliosaur that lived in America during the Cretaceous.The type species, Brachauchenius lucasi, lived in the Western Inland Sea of North America around 93.5-89.3 million years ago, during the Turonian stage of the Cretaceous...
- †Brachauchenius lucasi
|
|
Kansas, USA; Colombia |
A pliosaur that grew to around 10 meters in length, it represents the last known occurrence of a pliosaur in North America. |
|
- †Callawayasaurus
Callawayasaurus is a genus of plesiosaur from the family Elasmosauridae. When the first Callawayasaurus fossil was first discovered by Samuel Paul Welles in 1962, he described it as Alzadasaurus colombiensis before it was moved into its current genus by Kenneth Carpenter in...
- †Callawayasaurus colombiensis
|
|
Paja Formation, Colombia |
8 meters long elasmosaurid |
†KronosaurusKronosaurus is an extinct genus of short-necked pliosaur. It was among the largest pliosaurs, and is named after the leader of the Greek Titans, Cronus.-Discovery and species:Kronosaurus lived in the Early Cretaceous Period ....
†Kronosaurus boyacensis |
Aptian to AlbianThe Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
|
BoyacaBoyacá is one of the 32 Departments of Colombia, and the remnant of one of the original nine states of the "United States of Colombia".Boyacá is centrally located within Colombia, almost entirely within the mountains of the Eastern Cordillera to the border with Venezuela, although the western end...
, Colombia |
Among the largest pliosaurs, body-length estimates put the total length of Kronosaurus at 9–10 meters |
†UmoonasaurusUmoonasaurus is an extinct genus of plesiosaur belonging to the family Leptocleididae. This genus lived approximately 115 million years ago in shallow seas covering parts of what is now Australia. It was a relatively small animal around 2.5 m long...
†Umoonasaurus demoscyllus |
|
Australia |
Relatively small cryptocleidid, around 2.5 m long, identified by the three crest-ridges on its skull. |
†SauropodsSauropoda , or the sauropods , are an infraorder of saurischian dinosaurs. They had long necks, long tails, small heads , and thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land...
of the Aptian |
| Taxa |
Presence |
Location |
Description |
Images |
- †Amazonsaurus
Amazonsaurus is a genus of diplodocoid sauropod dinosaur from the Early Cretaceous Period of what is now South America. It would have been a large-bodied quadrupedal herbivore with a long neck and whiplash tail...
- †Amazonsaurus maranhensis
|
|
Itapecuru Formation, Maranhão, Brazil |
A genus of 12 meters long diplodocoid. |
|
- †Astrodon
Astrodon was a genus of large herbivorous sauropod dinosaur, related to Brachiosaurus, that lived in what is now the eastern United States during the Early Cretaceous period. Its fossils have been found in the Arundel Formation, which has been dated through palynomorphs to the Aptian-Albian...
- †Astrodon johnstoni
|
|
Arundel Formation, Maryland, USA |
A large titanosaur, adults are estimated to have been more than 9m high and 15m to 18m long. |
|
†Fusuisaurus Fusuisaurus is a genus of sauropod dinosaur from the Early Cretaceous of China....
†Fusuisaurus zhaoi |
|
Napai Formation, Guangxi, China |
Probably a basal titanosaur, known by fragmentary postcranial remains |
†JobariaJobaria was a sauropod dinosaur discovered in the Sahara Desert in 1997. It was named after "Jobar", a creature of local legends, and is thought to have been about 18 metres long. It was found in the Tiourarén Formation, originally thought to represent the Hauterivian to Barremian stages of the...
†Jobaria tiguidensis |
Aptian or AlbianThe Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
|
Sahara Desert |
Seems to be a very primitive sauropod. Unlike other Cretaceous sauropods, Jobaria had spoon-shaped teeth. |
|
†Karongasaurus Karongasaurus is the name given to a genus of dinosaur from the Early Cretaceous. It was a titanosaurid sauropod. Its fossils, consisting solely of part of a lower mandible and a few teeth, were found in Malawi...
†Karongasaurus gittelmani |
|
Malawi |
Titanosaurid which fossils consist solely of parts of a lower mandible and a few teeth |
|
†Ligabuesaurus Ligabuesaurus is a genus of dinosaur from the Early Cretaceous . It was a basal titanosaurid sauropod which lived in what is now Argentina. The type species, Ligabuesaurus leanzai, was described by Jose Bonaparte, Gonzalez Riga, and Sebastián Apesteguía in 2006, based on a partial skeleton...
†Ligabuesaurus leanza |
|
Argentina |
A basal titanosaurid |
|
†Malawisaurus Malawisaurus was a genus of sauropod dinosaur . It lived in what is now Africa, specifically Malawi, during the Aptian age of the Early Cretaceous Period. It is one of the few titanosaurs for which skull material has been found.It was named by Louis L. Jacobs and colleagues, and was originally...
†Malawisaurus dixeyi |
|
Malawi |
One of the few titanosaurs for which skull material has been found |
†NigersaurusNigersaurus is a genus of diplodocoid sauropod dinosaur from the middle Cretaceous period, about 119 to 99 million years ago during the Aptian or Albian age. This dinosaur was described by Paul Sereno and colleagues in 1999...
†Nigersaurus taqueti |
|
Elrhaz Formation The Elrhaz Formation is a geological formation in Niger whose strata date back to the Early Cretaceous...
, Niger |
Diplodocoid dinosaur, one of the most common genera found in the rich fossil vertebrate fauna of the Elrhaz Formation |
|
†Paluxysaurus Paluxysaurus is a genus of basal titanosauriform sauropod dinosaur from the late Aptian or early Albian-age Lower Cretaceous Twin Mountains Formation of Hood County, Texas, USA...
†Paluxysaurus jonesi |
|
Twin Mountains Formation The Twin Mountains Formation, also known as the Twin Mountain Formation, is a sedimentary rock formation, within the Trinity Group, found in Texas of the United States of America. It is a terrestrial formation of Aptian age , and is notable for its dinosaur fossils...
, Texas, USA |
A basal titanosauriform |
†SauroposeidonSauroposeidon is a genus of sauropod dinosaur known from four neck vertebrae that were found in the southeastern portion of the US state of Oklahoma. The fossils were found in rocks dating to the Early Cretaceous, a period when the sauropods of North America had diminished in both size and...
†Sauroposeidon proteles |
|
Antlers FormationThe Antlers Formation occurs as a band of strata from Arkansas through southern Oklahoma into northeastern Texas. It consists of 150 m of silty to sandy mudstones, fine- to coarse grained sandstones that are poorly to moderately sorted and cemented with clay or calcium carbonate...
, Oklahoma, USA |
The last known giant brachiosaurid; extrapolations indicate that the head of Sauroposeidon could reach 17 m in height, making it the tallest known dinosaur. With an estimated length of 30 m and a mass of 36–40 MT it also ranks among the longest and heaviest. |
|
†Tangvayosaurus Tangvayosaurus is a genus of sauropod dinosaur from the Aptian-Albian age Lower Cretaceous Grès Supérior Formation of Savannakhet, Laos...
†Tangvayosaurus hoffeti |
|
Grès Supérior Formation, Laos |
A basal titanosaur, known from the remains of two or three individuals. |
|
†Venenosaurus Venenosaurus named after the Poison Strip Member of the Cedar Mountain Formation in Utah, where the fossils were discovered by a Denver Museum of Natural History volunteer Tony DiCroce in 1998. Venenosaurus dicrocei was first described as a new species in 2001 by Virginia Tidwell, Kenneth...
†Venenosaurus dicrocei |
|
Cedar Mountain FormationThe Cedar Mountain Formation is the name given to distinctive sedimentary rocks in eastern Utah that occur between the underlying Morrison Formation and overlying Naturita Formation . It is composed of non-marine sediments, that is, sediments deposited in rivers, lakes and on flood plains...
, Utah, USA |
A titanosaur, known from an incomplete skeleton of an adult and a juvenile |
| †Non Avian Theropods of the Aptian |
| Taxa |
Presence |
Location |
Description |
Images |
- †Acrocanthosaurus
Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis. Its fossil remains are found mainly in the U.S...
- †Acrocanthosaurus atokensis
|
|
Texas, Oklahoma, ?Maryland, USA |
Likely an apex predator, up to 12 meters long. Classification disputed (Carcharodontosaurid or Allosaurid) |
|
- †Cryptovolans
- †Cryptovolans pauli
|
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Jiufotang FormationThe Jiufotang Formation is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms. . It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with...
, Liaoning, China |
Small (90 centimeters long feathered dromeaosaurid, possibly the same species as Microraptor Microraptor is a genus of small, four-winged dromaeosaurid dinosaurs. Numerous well-preserved fossil specimens have been recovered from Liaoning, China...
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†DeinonychusDeinonychus was a genus of carnivorous dromaeosaurid dinosaur. There is one described species, Deinonychus antirrhopus. This 3.4 meter long dinosaur lived during the early Cretaceous Period, about 115–108 million years ago . Fossils have been recovered from the U.S...
†Deinonychus antirrhopus |
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Cloverly FormationThe Cloverly Formation are Lower Cretaceous strata located in Montana and Wyoming, in the western United States. The term now includes strata that had formerly been called the Dakota Formation in central and southern Wyoming.-Members:...
, Montana and Wyoming, Antlers FormationThe Antlers Formation occurs as a band of strata from Arkansas through southern Oklahoma into northeastern Texas. It consists of 150 m of silty to sandy mudstones, fine- to coarse grained sandstones that are poorly to moderately sorted and cemented with clay or calcium carbonate...
, Oklahoma, Potomac FormationThe Potomac Formation consists of Lower Cretaceous to Upper Cretaceous strata located in Delaware, Maryland, and New Jersey, in the eastern United States.Flora found include large cycads....
, Maryland, USA |
3-4 meters long carnivorous dromaeosaurid |
†?GenyodectesGenyodectes is a genus of ceratosaurian theropod dinosaur from the Lower Cretaceous of South America. The holotype material was collected from the Cañadón Grande, Departamento Paso de Indios in the Chubut Province of Argentina and consists of an incomplete snout, including the premaxillae,...
†Genyodectes serus |
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Chubut Province, Argentina |
Possibly ceratosaurian |
†HuaxiagnathusHuaxiagnathus is a genus of theropod dinosaur from the Lower Cretaceous of China. It was a compsognathid, large for that group at about half a meter longer than Compsognathus and larger specimens of Sinosauropteryx, with the largest specimen about 1.8 meters in length.The name Huaxiagnathus is...
†Huaxiagnathus orientalis |
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Yixian FormationThe Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period...
, Liaoning, China |
Large (1.8 meter long) compsognathid |
†KryptopsKryptops is a genus of abelisaurid theropod dinosaur from the Early Cretaceous of Niger. It is known from a partial skeleton found at the Gadoufaoua locality in the western Ténéré Desert, in rocks of the Aptian-Albian age Elrhaz Formation...
†Kryptops palaios |
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Elrhaz Formation The Elrhaz Formation is a geological formation in Niger whose strata date back to the Early Cretaceous...
, Niger |
Earliest-known abelisaurid |
†NeovenatorNeovenator is a genus of allosauroid dinosaur. Since its discovery on the Isle of Wight, UK, it has become one of the best-known large carnivorous dinosaurs in Europe. Neovenator was at first considered possibly a new species of Megalosaurus. It measured approximately 7.5 meters in length,...
†Neovenator salerii |
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Isle of Wight, England, UK |
7.5 meters long allosaurid |
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†Protarchaeopteryx Protarchaeopteryx is a genus of turkey-sized feathered theropod dinosaur from China. Known from the Jianshangou bed of the Yixian Formation, it lived during the early Aptian age of the Early Cretaceous, approximately 124.6 million years ago...
†Protarchaeopteryx robusta |
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Yixian FormationThe Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period...
, Liaoning, China |
Primitive oviraptosaur, possibly synonymous with IncisivosaurusIncisivosaurus is a genus of small, probably herbivorous theropod dinosaur from the early Cretaceous Period of what is now the People's Republic of China...
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†Similicaudipteryx Similicaudipteryx, meaning "similar to Caudipteryx" , is a genus of theropod dinosaur of the family Caudipteridae. Its fossil remains were recovered from the Jiufotang and Yixian Formations of northeastern China, dating to the early Cretaceous Period between 124 and 120 million years ago...
†Similicaudipteryx yixianensis |
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Jiufotang FormationThe Jiufotang Formation is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms. . It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with...
, Liaoning, China |
Caudipterid oviraptosaur |
†SinornithoidesSinornithoides is a genus of troodontid theropod dinosaur. It lived during the Early Cretaceous . It measured approximately 1 meter long...
†Sinornithoides youngi |
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China |
1 meter long troodontid |
†SinosauropteryxSinosauropteryx was the first genus of dinosaur outside of Avialae to be found with evidence of feathers. They were covered with "furry" coats of very simple filament-like feathers...
†Sinosauropteryx prima |
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Liaoning, China |
1.20 meter long compsognathid, fossilized with traces of color pigmentation in its feathers |
†SuchomimusSuchomimus is a genus of large spinosaurid dinosaur with a crocodile-like mouth that lived sometime between 121-112 million years ago, during the late Aptian stage of the Cretaceous period in Africa.-Description:...
†Suchomimus tenerensis |
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Tenere, Niger |
12 meters long spinosaurid |
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†Tyrannotitan Tyrannotitan is a genus of huge bipedal carnivorous dinosaur of the carcharodontosaurid family from the Aptian stage of the early Cretaceous period, discovered in Argentina. It is closely related to other giant predators like Giganotosaurus and Carcharodontosaurus...
†Tyrannotitan chubutensis |
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Chubut Province, Argentina |
12 meters long carcharodontosaurid |
UtahraptorUtahraptor is a genus of theropod dinosaurs, including the largest known members of the family Dromaeosauridae. Fossil specimens date to the upper Barremian stage of the early Cretaceous period...
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North America |
The largest known dromaeosaurid |
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, vol. ii.