Table 3. Description and scoring of the additional characters 32, 33, 62, 64, 87, 88, and 92.

Character	Bone	Character description	Desmatochelys lowii	Eretmochelys imbricata	Dermochelys coriacea	Chelydra serpentina
32	Postorbital	Recess on the ventral side of the dorsal part of the postorbital. 0 = absent; 1 = present	1	0	0	1
33		Position of notch in the posterior margin of the orbit. 0 = at the top of the orbit; 1 = at the mid level	1	0	0	1
62	Epipterygoid	Participation of the epipterygoid to the foramen nervi trigemini. 0 = absent; 1 = present	0	–	–	1
64	Prootic	Extent of the suture with the parietal. 0 = very short or absent; 1 = long	1	0	0	1
87		Dorsomedial process of the prootic in medial view. 0 = absent, prootic has a similar height to the opisthotic; 1 = present, prootic process significantly higher then opisthotic	–	0	0	1
88	Opisthotic	Participation of the opisthotic to the formation of the foramen stapedio-temporale. 0 = absent; 1 = present	1	0	1	0
92	Quadrate	Processus epipterygoideus. 0 = absent; 1 = present	0	1	1	1