l6o NEW YORK STATE MUSEUM 



Beekmantown (Fort Cassin beds) Valcour, N. Y. 

 G. van Jngen & R. Ruedemann, coll. 1899 

 Cameroceras tenuiseptum Hall (sp.) 



6386 J-^^-§^^ HYPOTYPE Orthoceras tenuiseptum 



Hall. Paleontology of New York. 1847. ^' 35- 

 Cameroceras tenuiseptum Ruede- 

 mann. New York state museum bulletin 90. 

 1906. pi. 3, fig. 2. 



Upper Chazy limestone Chazy, Clinton co. N. Y. 

 R. Ruedemann, coll. 1903 



6387 J^|-S-§- HYPOTYPE Ruedemann. New York state museum 



bulletin 90. 1906. pi. 6, fig. 2. 

 Upper Chazy limestone 



Valcour island, Clinton co. N. Y; 

 R. Ruedemann, coll. 1903 



CYRTACTINOCERAS Hyatt 



Cyrtactinoceras boycii AVhitfield (sp.) 



6388 J--^^-^ HYPOTYPE Cyrtoceras boycii Whitfield. 



American museum of natural history bulletin 8. 

 1886. p. 326. 



Cyrtactinoceras boycii Ruedemann. 

 New^ York state museum bulletin 90. 1906. p. 490, 



fig- 45- 



Upper Chaz}^ limestone 



Valcour island, Clinton co. N. Y. 

 G. H. Hudson, donor 



6389 i^i-^-^ HYPOTYPE Ruedemann. New York state museum 



bulletin 90. 1906. pi. 35, fig. 2. 



Upper Chazy limestone Chazy, Clinton co. N. Y. 



R. Ruedemann, coll. 1903 



6390 i^-^-^ HYPOTYPE Ruedemann. New York state museum 



bulletin 90. 1906. pi. 35, fig. 3, 4. 



Middle Chazy Chazy, N. Y. 



R. Ruedemann, coll. 1903 



Cyrtactinoceras champlainense Ruedemann 



6391 i^-^-^-6- TYPE Cyrtactinoceras champlainense 



Ruedemann. New^ York state museum bulletin 90. 

 1906. p. 491; p. 491, fig. 48, 49; pi. 34, fig. 3. 



