312 The American Geologist. Noyember, 1003. 
ir, N. S. Shaler. Geology of the Cape Cod district. U. S. Geol. 
Surv., 18th Ann. Rept., Pt. 2, pp. 503-593 (PP- 541-548). 
"J. B. Woodwokth (G. C. Curtis and). Nantucket, a morainal 
island. Jour. Geol, vol. 7, pp. 226-236. Warren Upham. Glacial 
history of the New England islands. Am. Geol., vol. 24, pp. 79-89. 
17 loc. cit. 
THE DEVONIAN ERA IN THE OHIO BASIN.* 
By Edward W. Clavpole. 
III. THE VERTEBRATE FAUNA OF WESTERN 
APPALACHIA. 
The Corniferous limestone contains the remains of fishes 
and these are the earliest traces of vertebrate life yet known in 
Ohio. They consist of the jaws and body plates of a large gan- 
oid, named by Dr. Newberry, Onychodus, and of the cranium 
of another, the Macropetalichthys rapheidolabis of Norwood 
and Owen, now known in consequence of the loss of the origin- 
al type, as M. sullivaiiti. These two species, of which the for- 
mer is more abundant at Delaware and the latter at Sandusky, 
seem to have been the most numerous fishes of the period as 
their remains are by far the commonest that are met with in 
these strata. The bone-bed which caps the Corniferous proper 
is composed largely of broken fragments of the former species 
not unmixed with others. Little has yet been done in the work- 
ing out of the remarkable sheet of fossils, but persistent and 
careful search will doubtless, in the future be rewarded with 
valuable results. 
In the reports on the geological survey of Ohio there are ex- 
cellent descriptions from the pen of the late Dr. Newberry of 
the portions of Onychodus thus far identified and very little can 
be added to his account. Cope has given a few additional 
details regarding Macropetalichthys in a paper read at the In- 
dianapolis meeting of the American Association, in 1890. But 
.beyond this, little or nothing has been added to our knowledge 
during recent years. No part of the fish except the remarkable 
* Continued from page 250. 
