io8 



CRETACEOUS AND TERTIARY FISH. 



ured in this connection, though I have been unable to locate their 

 true identity. Many are, no 1 doubt, selachians, though many may 

 also belong to teleosts. They are all from Cretaceous beds, but 

 are without stratigraphical position, like most all of the older col- 



Fig. 60. — Myliobatis spine? Vincentown (Bryan). 



5 <S5^T 



M 7 



Fig. 6i. — Teleost otoliths. 1-3, Haddonfield; 4-8, Mt. Laurel (Woolman). 



L 



3 



Fig. 62. — Rays from a batoid fish? Vincentown (Bryan). 



lections. There is also a spine, possibly of Myliobatis (Fig. 

 60), and several teleost otoliths (Fig. 61). Several small, thin, 

 rod-like fossils may also belong to rays (Fig. 62). 



Sub-Class HOLOCEPHALI. 



THE CHIMERAS. 



Teeth united to form bony plates. Jaws coalescent with skull. 

 Gill-openings single in each side of pharynx, leading to four gill- 

 slits. Skull without system of membrane bones, as opercles, 

 suborbitals, etc. Skeleton cartilaginous. Mandibular suspens- 

 orium wanting. Intestine with a spiral valve. Derivative radii 

 sessile in sides of basal bones of limbs. Pectoral fins normally 



