1895. | NEW YORK ACADEMY OF SCIENCES. 115 
SECTION OF GEOLOGY AND MINERALOGY. 
The following papers were read : 
“Notice of an ancient Beaver Pond at Plainfield, N. H.,” by 
O. P. Hubbard. 
‘Notes on the Trenton Limestones in the Lake Champlain 
Valley,” by Gilbert Van Ingen. 
A NEW CLADODONT FROM THE OHIO WAVERLY 
CLADOSELACHE* NEWBERRYI, N. SP. 
By Basurorp DEAN. 
(PLATE 1.) 
Among the fossil sharks secured by Prof. Newberry, now in 
the possession of Columbia College, the writer finds an unde- 
scribed specimen which proves of considerable interest. It ap- 
pears to have been collected by Rev. Dr. Kepler, near Linton, 
Ohio, about 1890, and when received together with other and 
better material was regarded by Dr. Newberry as an immature 
specimen of * Cladodus” (Cladoselache*) fyleri. It is lacking 
in counterpart. 
The fossil presents for examination the following parts: Vis- 
ceral (?) aspect from near the tip of snout to hinder region of 
trunk (ef. in accompanying Fig. ITI.); a well preserved pectoral 
fin, muscle plates, the basal cartilages of a ventral fin, and in 
visceral region a well marked coprolite. The specimen measures 
in its widest part three, and in axial length thirteen inches. The 
length of the pectoral fin is two inches, its breadth one and one- 
half. 
This fin, accordingly, is but about one-third (in linear meas- 
urement) the size of the pectoral of Cladoselache fyleri, but dif- 
fering but slightly in its structures, the fossil might readily be 
assigned to this species. General proportions of the body, 
prove, however, to be widely unlike those of fyleri, and these 
together with the minor differences in fin structure might rea- 
sonably be taken as characteristic of a new species. The spe- 
cific name the writer would dedicate to Dr. Newberry as the 
first describer of Cladodonts. 
* Cf. in current number of American Journal of Morphology the characters 
of this genus, as discussed by the writer, also, Trans. N, Y. Acad. of Sci. Vol. 
XII., p. 121, 1893. 
