Bell. 



86 



Bellerophon percarinatus. (Conrad. Jour. Acad. N. S. 



Phil. 1842, 

 Vol. 8, 

 plate 16, 

 fig. 5 ; Nor- 

 w o o d & 

 Pl'33 Pratten, 

 I A Joar. Acad. N. 

 S. Phil. 1854, 

 Vol 3, page 74, 

 plate 9, fig. 4) 

 Collett's In- 

 diana Kept, of 



3 883, page 158, plate 33, figs. 9, 10, 11, views of a specimen 

 showing both side ridges and middle nodular ridges, or rows of 

 little knobs; figs. 12, 13, 14, another specimen without side 

 ridges ; all of natural size. One of the commonest shells from 

 coal M. of Indiana upward through the Upper Coal Measures. 



In Wilkes-Barre anthracite measures doubtfully identified 

 by Heilprin, in An. Rt. G. Sur. Pa. 1885, p. 451, in Wyoming 

 Hist. Soc.'s collections. — In Western Pennsylvania, Beaver, 

 Lawrence, Mercer and Butler Cos. in Ferriferous limestone 

 (Q 62, 200; QQ 47, 106; QQQ, 25; V, 14"). In Fayette Co- 

 Coal measures, KKK, 310. In W. Va. Barren measure shale 

 250' beneath Pitts. C. Stevenson, Trans. A. P. S. quoted in L, 

 36.— X///, X/F. 



Bellerophon profundus. Emmons, page 393, figs. 103, 1, 

 I i *L 2, 3. — Trenton forma- 



tion. II G. — Abund- 

 ant in the black beds 

 of the formation. At 

 Watertown, N, Y., in 

 ^__ ^ -.,^w - 3- the lumpy beds it may 

 C.J05. X. YyQ found in certain 



irregular masses which no one would suspect to contain fossils, 

 for they are black, smooth, polished and without external 

 marks. The shells here are of the size of the figures above ; 

 but elsewhere the species grew sometimes four times that size. 

 Mouth rarely seen ; but in one large specimen shows remarkably 

 expanded, and wide out of all proportion to the body. 



EJ03. 



