Crocodilus antiqua (Leidy, 1852) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata class Crocodylia family Crocodylidae genus Thecachampsa species Crocodilus antiqua Name Synonyms Crocodylus antiquus (Leidy, 1852) Crocodylus contusor (Cope, 1867) Thecachampsa antiqua (Leidy, 1852) Thecachampsa antiquus (Leidy, 1852) Thecachampsa contusor (Cope, 1867) Homonyms Crocodilus antiqua (Leidy, 1852)