Heterodontagama

Heterodontagama Temporal range: Ypresian, 54 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Iguania
Family:	†Priscagamidae
Genus:	†Heterodontagama Rana et al., 2013
Type species
†Heterodontagama borsukae Rana et al., 2013

Heterodontagama is an extinct genus of iguanian lizard from the Early Eocene of India. It belongs to the extinct family Priscagamidae, which is otherwise only known from the Late Cretaceous of Mongolia. The type species Heterodontagama borsukae was named in 2013 from several isolated upper and lower jaws found in an exposure of the Cambay Shale in an open-pit coal mine in Gujarat.

Heterodontagama has a distinctively heterodont dentition. The two pairs of teeth at the front of the lower jaw are enlarged, pointed, and pleurodont, meaning that they grow from the inner surface of the jaw. The four following pairs of teeth are much smaller and acrodont, meaning that they grow from the upper margin of the jaw. Behind them are four pairs of larger, laterally compressed, and triangular acrodont teeth.^[1]

References

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Extinct squamate genera

• Kingdom: Animalia
• Phylum: Chordata
• Class: Reptilia
• Superorder: Lepidosauria

Iguania
Acrodonta Anqingosaurus Barbaturex Bharatagama Gueragama Xianglong Agamidae Indiagama Suratagama Pleurodonta / Iguanoidea Anolbanolis Suzanniwana Uquiasaurus Xihaina Corytophanidae Aciprion? Babibasiliscus Geiseltaliellus †Gobiguania Anchaurosaurus Ctenomastax Igua Isodontosaurus Polrussia Saichangurvel Temujinia Zapsosaurus Iguanidae Afairiguana Polychrotidae Armandisaurus Lapitiguana Pariguana Pristiguana Pumilia Phrynosomatidae Desertiguana Other extinct iguanians Brasiliguana Hoyalacerta? Huehuecuetzpalli? Swainiguanoides †Arretosauridae Arretosaurus Dornosaurus Ergiliinsaurus Khaichinguana †Priscagamidae Heterodontagama Mimeosaurus Phrynosomimus Pleurodontagama? Priscagama

†Polyglyphanodontia / Borioteiioidea

Chamopsiidae Chamops Gerontoseps Glyptogenys Harmodontosaurus Haptosphenus Leptochamops Meniscognathus Pelsochamops Socognathus Stypodontosaurus Trippenaculus Gilmoreteiidae / "macrocephalosaurines" Gilmoreteius Kuwajimalla Yechilacerta "Polyglyphanodontines" Bicuspidon Cherminsaurus Darchansaurus Distortodon Erdenetesaurus Polyglyphanodon Sineoamphisbaena? Other polyglyphanodontians Adamisaurus Funiusaurus Gobinatus Obamadon Olindalacerta? Paleochelco? Peneteius Tchingisaurus Tianyusaurus Tijubina? Tripennaculus

Stem Scincogekkonomorpha
Scincogekkonomorpha Ardeosaurus? Bavarisaurus? Eichstaettisaurus? Jucaraseps Liushusaurus? Pedrerasaurus Scandensia? Yabeinosaurus? Scleroglossa Gekkonomorpha Norellius Gekkota Cadurcogekko Cretaceogekko Gobekko Hoburogekko Yanatarogecko Stem Autarchoglossa (Evansauria) Parmeosaurus Tepexisaurus Tijubina? †Bainguidae? Bainguis? Eoxanta Globaura Myrmecodaptria

Scincomorpha

Cordyloidea Eocordyla Ornatocephalus Sakurasaurus Lacertoidea Cnodontosaurus Paracontogenys Purbicella †Polyglyphanodontia? Amphisbaenia Oligodontosaurus Todrasaurus Amphisbaenidae Listromycter Lophocranion Bipedidae Anniealexandria Blanidae Blanosaurus Cuvieribaena Louisamphisbaena †Chthonophidae Chthonophis Rhineuridae Archaerhineura Dyticonastis Hadrorhineura Hyporhina Jepsibaena Macrorhineura Ototriton Plesiorhineura Protorhineura Spathorhynchus †Polyodontobaenidae Polyodontobaena †Contogeniidae Contogenys Palaeoscincosaurus Utahgenys Lacertidae Amblyolacerta Camptognathosaurus? Dormaalisaurus Dracaenosaurus Escampcerta Gracilicerta Ligerosaurus Maioricalacerta Mediolacerta Plesiolacerta Pseudeumeces Pseudolacerta Quercycerta Teiidae Brevisaurus? Meyasaurus? Ptilotodon †Barbatteiidae Barbatteius Oardasaurus Xantusiidae Catactegenys Palepidophyma Palaeoxantusia Scincoidea Retinosaurus Scincoideus Slavoia Scincidae Axonoscincus Orthoscincus Pyrenasaurus? Other scincomorphs Apsgnathus Calanguban Chromatogenys Dakotaseps Kleskunsaurus Lonchisaurus Monocnemodon Pachygenys Saurillodon Saurillus Sciroseps Webbsaurus †Paramacellodidae Atokasaurus? Becklesius Mimobecklesisaurus Paramacellodus Parasaurillus? Pseudosaurillus? Sharovisaurus

Anguimorpha
Basal anguimorphs Chometokadmon Eolacerta Paramacellodus Paravaranus? Yabeinosaurus? †Mosasauroidea? †Aigialosauridae †Mosasauridae Neoanguimorpha Carusioidea Carusia Xenosauridae Entomophontes Exostinus Restes Anguidae Odaxosaurus Anguinae Headonhillia Helvetisaurus Ophisauriscus Ragesaurus Diploglossinae Apodosauriscus Eodiploglossus Gerrhonotinae Paragerrhonotus Parophisaurus †Glyptosaurinae Arpadosaurus Melanosaurus Gaultia Glyptosaurus Helodermoides Odaxosaurus Paraglyptosaurus Paraplacosauriops Peltosaurus Placosaurus Proglyptosaurus Proxestops Xestops Paleoanguimorpha Basal varanoids / platynotans Aiolosaurus Colpodontosaurus Dorsetisaurus Eosaniwa Palaeovaranus Parasaniwa Parviderma Proplatynotia Saniwides Telmasaurus Shinisauria? Bahndwivici Dalinghosaurus Merkurosaurus Provaranosaurus Goannasauria Basal Goannasaurians Asprosaurus Chianghsia Estesia Eurheloderma Gobiderma Lowesaurus Morohasaurus Palaeosaniwa Paraderma Primaderma Varanoidea Lanthanotidae Cherminotus Varanidae Ovoo Saniwa Archaeovaranus Other platynotans / varanoids Arcanosaurus? Cemeterius Dryadissector

Ophidia
Coniophis Diablophis Dinilysia? Eophis Lapparentophis Najash? Parviraptor Portugalophis Tetrapodophis See Serpentes (snakes)

Indeterminate squamates
Costasaurus Lamiasaura Oculudentavis? Schillerosaurus

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