ammonites
Thecachampsa antiqua Leidy 1852

Reptilia - Crocodylia - Crocodylidae

Alternative combinations: Crocodilus antiqua, Crocodylus antiquus

Synonyms: Gavialosuchus americana Sellards 1915, Thecachampsa contusor Cope 1868, Thecachampsa sericodon Cope 1868, Thecachampsa sicaria Cope 1869, Tomistoma americana Sellards 1915, Tomistoma lusitanica Antunes 1961

Belongs to Thecachampsa according to A. C. Myrick 2001

Sister taxa: Thecachampsa marylandica, Thecachampsa minor, Thecachampsa serrata

Average measurements (in mm): skull 900.0 x 333.0

Estimated body mass: 1.49 tons based on skull length