TYPE SPECIMENS OF PALEOZOIC FOSSILS 547 



Platyceras (Orthonychia) attenuatum 

 Hall. Illustrations of Devonian fossils. 1876. Gasteropoda, 

 pi. 3, fig. 1. 



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

 pi. 3, fig. 1. 



Hamilton shales Canandaigua lake, N. Y. 



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



3368 J-fl|^i type Hall. Illustrations of Devonian fossils. 1876. 



Gasteropoda, pi. 3, fig. 5, 6. 



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

 pi. 3, fig. 5, 6. 



Hamilton shales Canandaigua lake, N. Y. 



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



Platyceras auriculatum Hall 



3369 10 ? 02 type Platyceras auriculatum Hall. Illustra- 



tions of Devonian fossils. 1876. Gasteropoda, pi. 3, 

 fig. 8-10. 



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

 p. 7, pi. 3, fig. 8-10. 



Hamilton shales Darien, Genesee co. N. Y. 



C. Van Deloo, coll. 1864 



Platyceras bucculentum Hall 

 337° 1Q -^ JlA type Platyceras bucculentum Hall. Descrip- 

 tions of new species of fossils from the Upper Helderberg, 

 Hamilton and Chemung groups. 1861. p. 5. 



Hall. Illustrations of Devonian fossils. 1876. Gaster- 

 opoda, pi. 3, fig. 29. 



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

 pi. 3, fig. 29. 



Hamilton shales Canandaigua lake, N. Y. 



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



Platyceras carinatum Hall 

 337 1 In i M type Platyceras carinatum Hall. Descriptions 

 of new species of fossils from the Upper Helderberg, 

 Hamilton and Chemung groups. 1861. p. 5. 



Hall. Illustrations of Devonian fossils. 1876. Gaster- 

 opoda, pi. 2, fig. 20, 21. 



Hall. Paleontology of New York. 1879. v. 5. pt _\ 

 pi. 2, fig. 20, 21. 



Hamilton shales Canandaigua lake, X. Y. 



C. A. White and C. Van I Moo, eoll. i860 



