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Phrynosomimus

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Extinct genus of lizards

Phrynosomimus
Temporal range: Santonian-Campanian
~84.9–70.6 Ma PreꞒ O S D C P T J K Pg N
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Iguania
Family: Priscagamidae
Genus: Phrynosomimus
Alifanov, 1996
Type species
Phrynosomimus asper
Alifanov, 1996

Phrynosomimus is an extinct genus of iguanian lizard from the Late Cretaceous of Mongolia belonging to the extinct family Priscagamidae. The type species Phrynosomimus asper was named in 1996. Fossils have been found in the Barun Goyot and Djadochta formations and include several complete skulls. Phrynosomimus has a short, triangular skull with bony spikes projecting from the back, stemming from the squamosal and parietal bones. These spikes give it a similar appearance to the modern horned lizard Phrynosoma and inspire its name, which means "Phrynosoma mimic." Like other priscagamids it has an acrodont dentition, meaning that its teeth grow from the margins of the jaws rather than their inner surfaces, as is the case for the pleurodont dentitions of most lizards.

References

  1. Phrynosomimus at Fossilworks.org
  2. Gao, Keqin; Norell, Mark (2000). "Taxonomic composition and systematics of late Cretaceous lizard assemblages from Ukhaa Tolgod and adjacent localities, Mongolian Gobi Desert". Bulletin of the American Museum of Natural History (249): 1–117. hdl:2246/1596.
Extinct squamate genera
Iguania
Acrodonta
Agamidae
Pleurodonta / Iguanoidea
Corytophanidae
Gobiguania
Iguanidae
Phrynosomatidae
Other extinct iguanians
Arretosauridae
Priscagamidae
Armandisaurus explorator
Polyglyphanodontia / Borioteiioidea
Chamopsiidae
Gilmoreteiidae / "macrocephalosaurines"
"Polyglyphanodontines"
Other polyglyphanodontians
Stem Scincogekkonomorpha
Scincogekkonomorpha
Scleroglossa
Gekkonomorpha
Gekkota
Stem Autarchoglossa
(Evansauria)
Bainguidae?
Scincomorpha
Cordyloidea
Lacertoidea
Amphisbaenia
Amphisbaenidae
Bipedidae
Blanidae
Chthonophidae
Rhineuridae
Polyodontobaenidae
Contogeniidae
Lacertidae
Teiidae
Barbatteiidae
Xantusiidae
Scincoidea
Scincidae
Other scincomorphs
Paramacellodidae
Anguimorpha
Basal anguimorphs
Mosasauria?
Mosasauroidea
Neoanguimorpha
Carusioidea
Xenosauridae
Anguidae
Anguinae
Diploglossinae
Gerrhonotinae
Glyptosaurinae
Paleoanguimorpha
Basal varanoids / platynotans
Shinisauria?
Goannasauria
Basal Goannasaurians
Varanoidea
Lanthanotidae
Varanidae
Other platynotans / varanoids
Aigialosaurus dalmaticus

Plioplatecarpus primaevus Estesia mongoliensis Telmasaurus grangeri

Varanus priscus
Ophidia
Indeterminate squamates


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