397 
A mere casual inspection of the above list will show the Pottsville 
aspect of the plants. Of these forms Sphenophylum cuneifolium, 8. bi- 
furcatum, S. tenerrimum?, Asterophyllites erectifolius, A. gracilis, Ale- 
thopteris Evansi, A. grandifolia, A. lonchitica, Neuropteris Elrodi, N. fim- 
briata, N. Jenneyi, Pseudocopteris decipiens, Shenopteris communis, Car- 
diocarpon annulatum, ©. cornutum, C. pachytesta?, have not been re- 
ported. I believe, from formations younger than Pottsville age. Of those 
Pottsville forms Sphenophyllum bifurcatum, Alethopteris Eivansi, A. 
lonechitica, Neuropteris Elrodi, N. fimbriata, and Cardiocarpon cornutum 
were reported by White* as being confined to the Upper Lykens Coal 
group of the Pottsville type section. Sphenophyllum cuneifolium and 
Cardiocarpon annulatum were reported from both the Upper Lykens Coal 
group and the Upper Intermediate group of the type section. Alethopteris 
grandifolia was reported from the Lower Intermediate group in the type 
section. The vertical range of several of the remaining forms is either 
not definitely known or is too great for correlation purposes; the rest of 
the forms are too poorly preserved. for specific classification. Therefore 
only those forms reported from the Pottsville type sections are considered 
of value for correlation. A comparison of the list of Pottsville plants 
from the Yoho School locality with the list of plants from the Pottsville 
type section indicates that the Pennsylvanian of the Yoho School area 
represents an horizon in the upper part of the Middle Pottsville of the 
type section. 
List of plants from the Cincinnati locality: 
Calamites approximatus Schloth. 
Calamites sp. 
Lepidodendron clypeatum Lx. 
Lepidodendron sp. 
Neuropteris lunata? D. W. 
Lepidophloios sp. 
Of the above listed forms Calamites approximatus and Neuropteris 
lunata? have been reported from the Upper Lykens Coal group of the type 
section of the Pottsville. Lepidodendron clypeatum has too great a ver- 
ticai range to be of value as a horizon marker. The other forms were too 
*White, David. The Stratigraphic Succession of the Fossil Floras of the Pottsville Formation 
in the Southern Anthracite Coal Field, Pennsylvania. 20th Ann. Rep’t. U.S. G.S. Part II. 1900. 
