Fig. 31 in Postnatal Ontogeny Of The Skull In Th E Ex Tant North Am Eric An Turtle Sternotherus Odoratus (Crypto Dir A: Kinosterni Dae) G A B E S. B E V Er

Fig. 31. Photographs and line drawings of the basicranial region of M-2984 (A) and M-2967 (B) showing the morphology of the parabasisphenoid-basiocccipital suture. The suture in M-2984 is relatively straight and exhibits a remnant of the fenestra basicranialis (fb). The suture in M-2967 is rostrally curved and marked by two caudolateral processes of the parabasisphenoid. The fenestra basicranialis is obliterated. A rostrally convex ridge marking the insertion of the M. rectus capitis is present and has a rostral position on the parabasisphenoid in both specimens.