Socognathus

Socognathus is a genus of prehistoric chamopsiid polyglyphanodontian lizards^[1] containing species that lived from the Middle Campanian stage to the late Maastrichtian. Several specimens of the type species, Socognathus unicuspis, have been found in Alberta, Canada.^[2][3] A second species, Socognathus brachyodon is known from the late Maastrichtian Lance Formation; its fossils have been found in Wyoming, United States.^[1][4]

Socognathus Temporal range: Middle Campanian to late Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Clade:	†Polyglyphanodontia
Genus:	†Socognathus Gao & Fox 1991
Species:	†S. unicuspis
Binomial name
†Socognathus unicuspis Gao & Fox 1991