Palaeochersis

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

Palaeochersis

This form is described in Rougier et al. (1995). However, the senior author has studied this material and some undescribed specimens (kindly made available by Andrea Arcucci) and has made corrections to the character matrix used by them ( Rougier et al., 1995). In particular, the possible suturing of the pelvis described by Rougier et al. (1995) is incorrect. In the opinion of the senior author, the pelvis of Palaeochersis is not sutured to the shell; rather, the appearance of this is due to dorsoventral crushing and deformation. The pelvis articulation in Palaeochersis is the same as in Proganochelys . The basicranium in Palaeochersis is fused, not an open articulation as in Proganochelys , and the cavum tympani is advanced over Proganochelys , all as described by Rougier et al. (1995).