Toxolophosaurus
Encyclopedia
Toxolophosaurus was a Sphenodontid
from the Early Cretaceous
–age Kootenai Formation
of Montana
.
in 1985. It is closely related to Priosphenodon and Eilenodon
.
Sphenodontia
Sphenodontia is an order of lizard-like reptiles that includes only one living genus, the tuatara , and only two living species...
from the Early Cretaceous
Early Cretaceous
The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...
–age Kootenai Formation
Kootenai Formation
The Kootenai 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...
of Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...
.
Discovery
Toxolophosaurus cloudi was found by Olson in 1960 in the Kootenai Formation, 223.75 feet above the base of the Kootenai.Classification
Toxolophosaurus was named a member of Sphenodontidae by Michael BentonMichael Benton
Michael J. Benton is a British paleontologist, a Fellow of the Royal Society of Edinburgh, and professor of vertebrate palaeontology in the Department of Earth Sciences at the University of Bristol....
in 1985. It is closely related to Priosphenodon and Eilenodon
Eilenodon
Eilenodon is a Late Jurassic genus of sphenodont reptile from the Morrison Formation of western North America, present in stratigraphic zone 4.-See also:* Prehistoric reptile* Paleobiota of the Morrison Formation...
.
See also
- LepidosauromorphaLepidosauromorphaLepidosauromorpha is a group of reptiles comprising all diapsids closer to lizards than to archosaurs . The only living sub-group is the Lepidosauria: extant lizards, snakes, and tuatara...
- LepidosauriaLepidosauriaThe Lepidosauria are reptiles with overlapping scales. This subclass includes Squamata and Sphenodontidae. It is a monophyletic group and therefore contains all descendents of a common ancestor. The squamata includes snakes, lizards, tuataras, and amphisbaenia. Lepidosauria is the sister taxon...
- SphenodontiaSphenodontiaSphenodontia is an order of lizard-like reptiles that includes only one living genus, the tuatara , and only two living species...
/ Rhynchocephalia - OpisthodontiaOpisthodontiaOpisthodontia is a genus of Moth in the family Lasiocampidae....
- OpisthiasOpisthiasOpisthias is a Late Jurassic genus of sphenodont reptile from the Morrison Formation of western North America, present in stratigraphic zones 2 and 4-6.-See also:* Prehistoric reptile* Paleobiota of the Morrison Formation...