TYPE SPECIMENS OF PALEOZOIC FOSSILS 6oi 



Gyroceras undulatum Hall. Illustrations of 

 Devonian fossils. 1876. Cephalopoda, pi. 56, fig. i. 



Gyroceras undulatum Hall. Paleontology of 

 New York. 1879. v. 5, pt 2, pi. 53, fig. i. 



Onondaga limestone Cherry Valley N. Y. 



C. A. White, coll. 1860 



3718 i-jp HYPOTYPE Hall. Illustrations of Devonian fossils. 1876. 



Cephalopoda, pi. 56, fig. 2. 



Hall. Paleontology of New York. 1879. v 5> P* 2 > 

 pi. 53, fig. 2. 



Onondaga limestone Cherry Valley N. Y. 



3719 if_2_a HYPOTYPE Hall. Paleontology of New York. 1879. 



v. 5, pt 2, pi. 53, fig. 3, 6. 



Onondaga limestone Cherry Valley N. Y. 



C. A. White, coll. 1860 



3720 i-^-f-^-s HYPOTYPE Hall. Paleontology of New York. 1879. 



v. 5, pt 2, pi. 53, fig. 5. 



Onondaga limestone Schoharie N. Y. 



J. Gebhard purchase 



3721 12 | 28 HYPOTYPE Hall. Paleontology of New York. 1879. 



v. 5, pt 2, pi. 54, fig. 5. 



Onondaga limestone Cherry Valley N. Y. 



C. A. White, coll. 1860 



Gyroceras validum Hall 



3722 12 f 29 TYPE Gyroceras validum Hall. Illustrations o 



Devonian fossils. 1876. Cephalopoda, pi. 51, fig. 2. 



Hall. Paleontology of New York. 1879. v - 5> P* 2 > 

 p. 385, pi. 49, fig. 2. 



Schoharie grit Schoharie county, N. Y. 



J. Gebhard purchase 



^723 J^-l- 2 -^ TYPE Hall. Paleontology of New York. 1879. v. 5, 

 pt 2, pi. 100, fig. i. 



Schoharie grit Knox, Albany co. N. Y. 



C. Van Deloo, coll. 1862 



HORMOCERAS Hall 



Hormoceras ? gracile Hall 



JL2240 TYPE Ormoceras? gracile Hall. Paleontology of 

 New York. 1847. i : 58, pi. 17, fig. 3. 



Black River limestone Watertown N. Y. 



Albany Institute, donor 



