TYPE SPECIMENS OF PALEOZOIC FOSSILS 771 



hydnoceras Conrad 

 Hydnoceras hypastrum Hall & Clarke 



4869 23 1 92 plastotype Hydnoceras hypastrum Hall & 



Clarke. New York state museum memoir 2. 1898. 

 p. 105, pi. 7, fig. 1. 



Chemung beds Steuben county, N. Y. 



Hydnoceras jeumontense Hall & Clarke 



4870 -- x -- plastotype Hydnoceras jeumontense Hall & 



Clarke. New York state museum memoir 2. 1898. 

 p. 148, pi. 46, fig. 5. 



Psammites du Condroz Jeumont, France 



4871 23 2 f3 plastotype Hall & Clarke. New York state museum 



memoir 2. 1898. pi. 46, fig. 6. 



Psammites du Condroz Jeumont, France 



Hydnoceras tuberosum Conrad 



4872 --np- hypoplastotype Hall & Clarke. New York state museum- 



memoir 2. 1898. pi. 7, fig. 3. 



Chemung beds Brown hill, near Cohocton,. 



Steuben co. N:Y. 



hyphantaenia Vanuxem 



Hyphantaenia chemungensis Vanuxem (sp.) 



4873 ^-- hypoplastotype Hall & Clarke. New York state museum 



memoir 2. 1898. pi. 29, fig. r. 



Chemung beds Near Owego, Tioga co. N. Y. 



prismodictya Hall & Clarke 



Prismodictya cercidea Hall & Clarke 



4874 -- 2 -- plastotype Hall & Clarke. New York state museum 



memoir 2. 1898. p. 89, pi. 20, fig 2. 



Chemung beds Wellsville, Allegany co. N. Y. 



Prismodictya corynia Hall & Clarke 



4875 %*£-& plastotype Prismodictya corynia Hall & Clarke. 



New York state museum memoir 2. 1898. p. 86, pi. i7 r 

 fig. 11. 



Chemung beds Wellsville N. Y. 



