548 



NEW YORK STATE MUSEUM 



3372 ^0404 type Hall. Illustrations of Devonian fossils. 1876. Gas- 



teropoda, pi. 2, fig. 22-25. 



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

 fig. 22-25. 



Hamilton shales Canandaigua lake, N. Y. 



R. P. Whitfield and C. Van Deloo, coll. 1858 



3373 10 | 04 type Hall. Illustrations of Devonian fossils. 1876. Gas- 



teropoda, pi. 2, fig. 26, 27. 



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

 pi. 2, fig. 26, 27. 



Hamilton shales Bellona N.'Y. 



C. A. White and C. Van Deloo, coll. i860 



Platyceras conicum w Platyceras ( Orthonychia) 

 conicum 



Platyceras (Orthonychia) conicum Hall 



3374 iQ-J-^ type Platyceras conicum Hall. Descriptions of 



new species of fossils from the Upper Helderberg, Hamil- 

 ton and Chemung groups. 1861. p. 3. 



Hall. Illustrations of Devonian fossils. 1876. Gaster- 

 opoda, pi. 1, fig. 20-22. 



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

 pi. 1, fig. 20-22. 



Hamilton shales Bellona N. Y. 



C. A. White and C. Van Deloo, coll. i860 



Platyceras crassum Hall 



3375 *°f 06 type Platyceras crassum Hall. Descriptions of 



new species of fossils from the Upper Helderberg, Hamil- 

 ton and Chemung groups. 1861. p. 8. 



Hall. Illustrations of Devonian fossils. 1876. Gaster- 

 opoda, pi. 7, fig. 6. 



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

 pi. 7, fig. 6. 



Onondaga limestone Schoharie county, N. Y. 



Platyceras (Orthonychia) dentalium Hall 



3376 i&^sn type Platyceras (Orthonychia) dentalium Hall. 



Descriptions of new species of fossils from the Upper Hel- 

 derberg, Hamilton and Chemung groups. 1861. p. 1. 



Hall. Illustrations of Devonian fossils. 1876. Gaster- 

 opoda, pi. 1, fig. 3. 



