50 CONTRIBUTIONS TO DEVONIAN PALEONTOLOGY. [bull. 24J 
If the list of species is taken as a whole it becomes evident that the 
fauna is the one represented in the Genesee shales of New York. This 
interpretation would appear to be confirmed by the faunule (1367 A) 
at Huber, Bullitt County, Ky., in which Reticularia jimbriata, Athyris 
spiriferoides, and Tropidoleptus occur in the limestone directly under 
the black shale. The reported range of the fauna as given in Sehuch- 
ert's list of brachiopods is as follows: 
Range of black shale species. 
Lingula spatulata Genesee-Portage. 
L. ligea Hamilton-Portage. 
Schizobolus concentricus Genesee. 
Chonetes scitulus Marcel! us-Chemung. 
Leiorhynchus quadricostatum Genesee. 
And a Pleurotomaria sp. 
The sequence of faunas at Hot Springs, Bath County, Va. , presents 
another view of the case. There (1383 A) both Anoplia and Ano- 
plotheca occur in the black shales, which are over 100 feet thick and 
lie below the zone (A5) which contains Tropidoleptus carinatus; and 
no species of either of those two genera is listed higher than the. 
Onondaga (Corniferous) limestone. There is thus evidence that at:i 
Hot Springs the black shale sedimentation occurred as low as the- 
Onondaga formation. Such a conclusion is confirmed by the presence «■ 
in the faunule 1383 A 4, of Leiorhynchus limitare and Te?itaculites \ 
gracilistriatus (both regarded as confined to the Marcellus shale of- 
New York) and Anoplotheca. This conclusion is also supported by 
the composition of the faunule of zone 1382 B4, a typical black shale 
within 30 feet of the top of the Rensselaeria fauna, in which are found 
Anoplotheca acutiplicata (listed as an Onondaga (Corniferous) species) | 
with Leiorhynchus limitare and Agoniatites vanuxemi, both listed as j 
Marcellus species. Such facts indicate that the black shale was 
deposited in a thick mass in the Appalachian trough before the fauns \ 
of the Onondaga (Corniferous) formation was extinct. 
As the sections are followed upward, the shales become coarse anc 
flaggy and contain faunas which in New York occupy the formations 
from Onondaga upward to Chemung. The formations holding similai 
faunas in western Kentucky and Indiana, west of the Cincinnati arch 
are calcareous at the base. 
The fauna of the Sellarsburg beds contains traces at least of th< 
fauna of the Hamilton formation of New York State, and thus fur 
nishes reason for classif}dng the black shales of that region with th< 
Genesee of New York. 
