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Protognathosaurus Olshevsky 1991 (first jaw lizard)

Reptilia - Saurischia

PaleoDB taxon number: 65679

Synonym: Protognathus Zhang 1988 [replaced name] (taxon 65677)

Full reference: G. Olshevsky. 1991. A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia. Mesozoic Meanderings 2:1-196

Parent taxon: Sauropoda according to P. Upchurch et al. 2004

Sister taxa: Acanthopholis platypus, Aepisaurus, Agustiniidae, Amygdalodon, Archaeodontosaurus, Asiatosaurus, Astrodon johnstoni, Atlantosauridae, Atlantosaurus, Barosaurus affinis, Bothriospondylidae, Bothriospondylus elongatus, Bothrosauropodidae, Bothrosauropodoidea, Brachiosaurus nougaredi, Brontopodidae, Brontopodus, Brontosauridae, Bruhathkayosaurus, Camarasauroidea, Campylodoniscus, Cardiodontidae, Cetiosaurus epioolithicus, Cetiosaurus hypoolithicus, Cetiosaurus longus, Cetiosaurus medius, Chiayusaurus, Chinshakiangosaurus, Chondrosteosaurus, Chubutisauridae, Chuxiongosaurus, Clasmodosaurus, Clasmodosaurus spatula, Dachongosaurus, Damalasaurus, Eosauropus, Eusauropoda, Faveoloolithidae, Gigantosaurus, Gravisauria, Hamanosauripus, Haplocanthosauridae, Herrerasauridae, Homalosauropodidae, Homalosauropodoidea, Iguanodon praecursor, Iguanodonichnus, Isanosaurus, Koreanosauripus, Kotasaurus, Kunmingosaurus, Lamplughsaura, Lancanjiangosaurus, Lavinipes, Liujianpus, Mamenchisauroidea, Microdontosaurus, Microsaurops, Morinosaurus, Morosauridae, Neosodon, Nurosaurus, Ohmdenosaurus, Oplosaurus, Ornithopsidae, Oshanosaurus, Parabrontopodidae, Parabrontopodus, Pleurocoelidae, Pleurocoelus altus, Pleurocoelus nanus, Pleurocoelus valdensis, Polyonyx, Pulanesaura, Qinlingosaurus, Ravatichnus, Rotundichnus, Sanpasaurus, Tapinosaurus, Tendaguriidae, Titanosaurus lydekkeri, Titanosaurus montanus, Ultrasaurus, Vulcanodon, Zizhongosaurus

Subtaxa: Protognathosaurus oxyodon

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Type: Protognathus oxyodon

Ecology: ground dwelling herbivore