TYPE SPECIMENS OF PALEOZOIC FOSSILS 



655 



4108 * 2 f 62 hypotype Hall. Paleontology of New York. 1879. v. 5, 



pt2, pi. Ill, fig. 6. 



Schoharie grit Clarksville, Albany co. N. Y. 



Trochoceras discoideum see Trochoceras 

 (Sphyradoceras) discoideum 



Trochoceras (Sphyradoceras) discoideum Hall 



4109 ^ 2 | 63 type Trochoceras discoideum Hall. Descrip- 



tions of new species of fossils from the Upper Helderberg, 

 Hamilton and Chemung groups. 1861. p. 36. 



Trochoceras clio Hall. Illustrations of Devonian 

 fossils. 1876. Cephalopoda, pi. 59, fig. 6. 



Trochoceras discoideum Hall. Paleontology 

 of New York. 1879. v. 5, pt 2, pi. 59, fig. 8. 



Schoharie grit Schoharie N. Y. 



J. Gebhard purchase 



Trochoceras eugenium Hall 

 41 1 o ^f 4 - hypotype Trochoceras eugenium Hall. 14th 

 annual report of the New York state cabinet of natural 

 history. 1861. p. 108. 



Trochoceras sp.? Hall. Illustrations of Devonian 

 fossils. 1876. Cephalopoda, pi. 48, fig. 3. 



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

 Pi- 5 8 > fi g. 3- 



Schoharie grit Schoharie county, N. Y. 



J. Gebhard purchase 



41 1 1 12 | 64 type Hall. Illustrations of Devonian fossils. 1876. 



Cephalopoda, pi. 59, fig. 9. 



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

 pi. 59, fig. 11. 



Schoharie grit Schoharie county, N. Y. 



J. Gebhard purchase 



Trochoceras expansum Hall 



41 12 L2.iL6_5 type Trochoceras expansum Hall. Paleon- 



tology of New York. 1879. v. 5, pt 2, p. 402, pi. in, 

 fig- 5- 



Schoharie grit Schoharie county, N. Y. 



J. Gebhard purchase 



