Publication Date
7-10-1970
Series Number
147
Abstract
The gonorynchid fish Notogoneus osculus Cope is reexamined on the basis of newly prepared material. It is similar to the Recent genus Gonorynchus in possessing a cephalic rib, in the construction of the pelvic girdle, the suspensorium, coalesced frontals and the mandibular elements. Gonorynchid evolution from the Eocene on has been very conservative, and it is probable that the mechanics of the protrusible jaws in all genera of the family has remained unchanged from the Upper Cretaceous to the Recent.
COinS