6oc 



NEW YORK STATE MUSEUM 



Gyroceras trivolvis Hall. Illustrations of De- 

 vonian fossils. 1876. Cephalopoda, pi. 54, fig. 4, 5 ; pi. 56^ 

 fig. 4. 



Gyroceras trivolve Hall. Paleontology of New 

 York. 1879. v. 5, pt 2, pi. 52, fig. 1-3. 



Onondaga limestone Schoharie N. Y- 



J. Gebhard purchase 



3710 122 , 27 type Hall. Paleontology of New York. 1879. v. 5, pt 2 r 



pi. 52, fig. 4. 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3711 12 | 27 type Hall. Paleontology of New York. 1879. v. 5,pt2>- 



pl- 5 2 > fig- 5- 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3712 ^-p-^ type Hall. Illustrations of Devonian fossils. 1876. 



Cephalopoda, pi. 54, fig. 1-3. 



Hall. Paleontology of New York. 1879. v. 5, pt 2 y 

 pi. 52A, fig. 1-3. 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



37 l 3 1 2 5 2 7 type Hall. Paleontology of New York. 1879. v. 5^ 

 pt 2, pi. 52A, fig. 4. 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3714 J- 2 - 2 ^ type Hall. Paleontology of New York. 1879. v - 5> 



pt 2, pi. 52A, fig. 5. 



Onondaga limestone Schoharie N. Y. 



3715 * 2 227 type Hall. Paleontology of New York. 1879. v. 5, 



pt 2, pi. 52A, fig. 6. 



Onondaga limestone Cherry Valley N. Y. 



3716 ^l 2 - 7 - plastotype Hall. Paleontology of New York. 1879. 



v. 5> P* 2 > P 1 - 5 2A > fig- 7- 

 Onondaga limestone 



Gyroceras undulatum see Gyroceras (Hall- 

 oceras) undulatum 



Gyroceras <Halloceras) undulatum Vanuxem (sp.) 



37 17 1 2 \ 28 hypotype Cyrtoceras undulatum Vanuxem. 



Geology of New York ; report on the 3d district. 1842. 

 P- i39- 



