146 
PALEONTOLOGY OF NEW YORK. 
LIST OF DEVONIAN FOSSILS, Etc. (Continued). 
SPECIES. 
Upper Heid¬ 
elberg Gr’p. 
Hydraulic 
& Encrinal 
Limestones. 
Hamilton 
Group, N.Y. 
Chemung 
Group, N.Y. 
Gasteropoda (Continued). 
Pleurotomaria imitator ....... 
* 
Loxonema hydraulicum ...... 
* 
L. rectistriatum ....... 
* 
L. lseviusculum ....... 
. 
Naticopsis lsevis ........ 
Turbo Shumardii. 
* 
* 
Bellerophon Lyra ........ 
* 
* 
B. Leda ........ 
* 
B. patulus ... . 
• 
* 
* 
Pteropoda. 
Coleoprion tenuicinctum 1 ...... 
• 
* 
* 
• 
Cephalopoda. 
Gomphoceras turbiniforme ...... 
* 
. 
Goniatites discoideus, v. Ohiensis .... 
* 
* 
• 
Crustacea. 
Phacops bufo, v. ran a. 
. 
* 
* 
Dalinanites myrmecophorus ..... 
* 
D. anchiops ........ 
* 
1). iEgeria . .. 
* 
D. Helena. 
* 
D. selenurus ....... 
* 
D. Calypso. 
* 
D. Pleione, representing D. Boothi . 
* 
Proetus crassimarginatus ...... 
* 
P. canaliculatus . . ... 
* 
The above list of fossils is far from being complete; but at the present 
time we have not the means of perfecting it. When once the facts are recog¬ 
nized, and the position of these beds acknowledged, they will be studied as a 
distinct formation, and the fossils separated from those of the beds below, with 
which they have hitherto been confounded. 
It should be remembered that the facts above stated, and the fossils enu¬ 
merated, have been derived from a single locality—the Falls of the Ohio river. 
Elsewhere, in Kentucky and Indiana, the same conditions exist and the same 
species of fossils are known. In the State of Ohio similar conditions may be 
1 This fossil, which is apparently identical with the New York species, is quite common in the same bed 
with Chonetes Yandellana, at the Falls of the Ohio. Messrs. Yandell and Shumard, in speaking of the “ silice' 
ous crust,” above the waterlime, say : “In this crust we find a small Orthoceratite, two and sometimes three 
inches in length, with very thin septa. We have not been able to detect the position of the syphon. It is 
always siliceous.” This “ small Orthoceratite ” is unquestionably the Coleoprion, cited above ; and the slender 
cinctse were very naturally regarded as the septa. 
