Ankistrodon

Ankistrodon
Temporal range: Early Triassic, 251.9–247.2 Ma
Holotype in (A) lateral and (B) posterior views, with (C) a cross section of a tooth
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Family: Proterosuchidae
Genus: Ankistrodon
Huxley, 1865
Type species
Ankistrodon indicus
Huxley, 1865
Synonyms
  • Epicampodon Lydekker, 1885
  • Epicampodon indicus (Huxley, 1865) Lydekker, 1885
  • Thecodontosaurus indicus (Huxley, 1865) Huene, 1908
  • Chasmatosaurus indicus (Huxley, 1865) Huene, 1942

Ankistrodon is an extinct genus of archosauriform known from the Early Triassic Panchet Formation of India. First thought to be a theropod dinosaur, it was later determined to be a proterosuchid. The type species is A. indicus, described by prolific British zoologist Thomas Henry Huxley in 1865. One authority in the 1970s classified Ankistrodon as a senior synonym of Proterosuchus. Ezcurra (2023) found Ankistrodon to be a nomen dubium, as the teeth are indistinguishable from those of Proterosuchus. A second Indian proterosuchid from the same formation, Samsarasuchus, was also described in the same study, making it the only known valid proterosuchid from India.



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