553 



Orthoc. 



Orthoceras multicameratum. Rogers, 1858, page 817 



^g. 596. Emmons, 1842, 

 page 382, fig. 93. jBirds- 



^j „ x^:.,...-r. ,r - -:r ^^^ Umestone, Collected 



^^^^^^^^^^^ by O.E.Hall in Canoe Val- 

 ley^ Blair Oo , Pa., from 



Black river limestone. II c. 



Orthoceras multicinctum, Hall. 15th Annual Report, 



JIZ .^ 1862, page 76, plate 



I; 7, figs. 2, 3. Surface 



ringed with narrow 



ridges (13 to an inch 



in one specimen) ; 15 



I^Q// ^'^^j-'^ww^iapi^^ nearer the point; 



only 8 nearer the mouth ; in another smaller specimen 15 in 

 half an inch. — Schoharie grit, VII h. 



Orthoceras^multilineatum. Emmons, Geological Report 

 W}^^ 4f on the Second District of New 



li.lO^. 7. ^^^^^^^^^^^ Trenton formation, lie. 



Orthoceras nuntium, Hall 



W//C. o 



HaU- /sf-h. /(n. Rh /BS2 



15th Annual Report, 1862, 

 page 79, plate 

 8, fig. 3, cast 

 of imperfect 

 specimen; 4, 

 fragment pre- 

 serving sur- 



