6OC NEW YORK STATE MUSEUM 



Gyroceras trivolvis Hall. Illustrations of De- 

 vonian fossils. 1876. Cephalopoda, pi. 54, fig. 4, 5 ; pi. $6 r 

 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 12 p, 27 TYPE Hall. Paleontology of New York. 1879. v. 5,pt2 y 



pi. 52, fig. 4. 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3711 12227 TYPE Hall. Paleontology of New York. 1879. v. 5,pt2> 



pi. 52, fig. 5. 



Onondaga limestone Schoharie N. Y.. 



J. Gebhard purchase 



3712 J^f-- 2 -^ TYPE Hall. Illustrations of Devonian fossils. 1876. 



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



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

 pi. 52A, fig. 1-3. 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3713 122 . 27 TYPE Hall. Paleontology of New York. 1879. v. 5,. 



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



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3714 12 g 27 TYPE Hall. Paleontology of New York. 1879. v - 5r 



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



Onondaga limestone Schoharie N. Y, 



37 J 5 2 ^-- 2 r TYPE Hall. Paleontology of New York. 1879. v. 5,. 

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



Onondaga limestone Cherry Valley N. Y, 



3716 -LSfai PLASTOTYPE Hall. Paleontology of New York. 1879, 



v. 5, pt 2, pi. 52A, fig. 7. 

 Onondaga limestone 



Gyroceras undulatum see Gyroceras (Hall- 

 oceras) undulatum 



Gyroceras (Halloceras) undulatum Vanuxem (sp.) 



3717 * 222 s HYPOTYPE Cyrtoceras undulatum Vanuxem. 



Geology of New York ; report on the jd district. 1842. 

 P- 139- 



