Page:The Osteology of the Reptiles.pdf/42

24 the snakes (Fig. 59) and amphisbaenian lizards; in the mosasaurs (Fig. 57) their outer extremity extends to the outer extremity of the paroccipital, articulating with the so-called supratemporals, or, as the author believes, the tabulars.



. 10. A, B, Edaphosaurus. Theromorph skull: occipital complex, from without and within, natural size; C, genus indet. basisphenoid, from below; D, the same from above; E, the same from side, natural size. F, G, H, Eryops. Temnospondyl skull: basicranial bones, longitudinal and transverse sections; so, supraoccipital; po, paroccipital; eo, exoccipital; bo, basioccipital; pc, proötic; bs, basisphenoid; ps, parasphenoid; st, stapes; ep, epipterygoid.

Postoptics (as, al), (laterosphenoids, otosphenoids, "alisphenoids"). Variable and yet doubtful bones in the reptiles, apparently not