Stereogenyita

Gaffney, Eugene S., Meylan, Peter A., Wood, Roger C., Simons, Elwyn & De Almeida Campos, Diogenes, 2011, Evolution Of The Side-Necked Turtles: The Family Podocnemididae, Bulletin of the American Museum of Natural History 2011 (350), pp. 1-237 : 54

Infratribe Stereogenyita , new

DIAGNOSIS: Members of the Subtribe Stereogenyina ; labial ridge low and blunt; pinched snout (not known for Brontochelys ); cheek emargination does not reach level of orbit; eustachian tube separated by bone from rest of fenestra postotica (not in Cordichelys ); angle of front of skull exceeds 90 ° in contrast to the Infratribe Bairdemydita , in which it is 90 ° or less.

INCLUDED TAXA: Shweboemys Swinton, 1939 ; Stereogenys Andrews, 1901 ; Brontochelys , n. gen.; Lemurchelys , n. gen.

DISCUSSION: The low and blunt labial ridge is unique to this group among podocnemidids. The absence of cheek emargination, however, is found throughout the Infrafamily Erymnochelyodda and is known only for one specimen of Stereogenys among the Infratribe Bairdemydita .