280 



NORTH AMERICAN INDEX FOSSILS. 





Fig. 341. Amphigenia elongata (Pal. N. Y., IV.). 



LXXII. Camarophoria King. 

 Rhynchonelliform. Surface more or less plicated. Spondylium 



supported by a long median septum. 

 Devonic-Carbonic. 

 238. C. subcuneata Hall. (Fig. 

 342, a-c.) Mississippic. 



Wedge-shaped with rounded 

 front, nearly equally biconvex. 

 Beak of pedicle valve very acute 

 and but little incurved, perforated 

 by a triangular foramen. Surface 

 cuneata. (AfterWhitfield.) d-e> Ortho- marked by 1 2-14 angular plications,. 



rhynchula linneyu (After Nettelroth. ) crossec } by concentric Striae. 



St. Louis of Ohio, Indiana. 



FlG. 342. a-c, Camarophoria sub- 



