Proganochelys (Gaffney, 1990)

GAFFNEY, EUGENE S, TONG, HAIYAN & MEYLAN, PETER A, 2006, EVOLUTION OF THE SIDE-NECKED TURTLES: THE FAMILIES BOTHREMYDIDAE, EURAXEMYDIDAE, AND ARARIPEMYDIDAE, Bulletin of the American Museum of Natural History 300 (300), pp. 1-698 : 570

Proganochelys

The principal work on this taxon is Gaffney (1990). There is abundant support that Proganochelys is the sister taxon to all other turtles.

Kordikova (2002) has published new line drawings of the skull of Proganochelys showing sutures different from those in Gaffney (1990). In the opinion of the senior author, Kordikova has inadvertently mistaken cracks for sutures. Lucas et al. (2000) have identified a partial dermal ossicle from the Upper Triassic of New Mexico as a probable turtle, very close to Proganochelys . Although it is not clear what this fragment belongs to, the senior author thinks its identification as a turtle lacks credibility, and this potential range extension should be ignored.