TYPE SPECIMENS OF PALEOZOIC FOSSILS J67 



holoptychius Agassiz 

 Holoptychius americanus Leidy 



4853 -L6JJLL0 hypotype Holoptychius americanus Leidy. 



Journal of the Academy of natural sciences of Phil- 

 adelphia, ser. 2. 1856. 3:159. 



Eastman. 17th annual report of the New York state 

 geologist. 1899. p. 321 (not figured). 



Chemung beds Jefferson, Delaware co. N. Y. 



C. S. Prosser, coll. 1897 



Holoptychius halli Newberry 



4854 ^-S-^l type (2 specimens) Holoptychius hallii Newberry. 



United States geological survey monograph 16. 1889. 

 p. 114, pi. 20, fig. 10, 10a. 



Catskill sandstone Delhi, Delaware co. N. Y. 



Rev. Mr Fitch, donor 



Ichthyodorulite see Machaeracanthus sulcatus 



machaeracanthus Newberry 

 Machaeracanthus sulcatus Newberry 



4 8 55 i -f^ Q - type Ichthyodorulite Hall. Geology of New 



York; report on the 4th district. 1843. p. 174, fig. 69. 



Machaeracanthus sulcatus Newberry. Na- 

 tional mstitute bulletin. 1857. p. 6 (no figure given). 



Newberry. Geological survey of Ohio. 1873. v. 1, 

 pt 2; Paleontology, p. 305 (no figure given). 



Onondaga limestone Victor, Ontario co. N. Y. 



Geological survey collection 



onchus Agassiz 

 Onchus rectus Eastman 



4856 i^-o^o type Onchus rectus Eastman. 1 7th annual report 



of the New York state geologist. 1899. p. 323, fig. 4. 

 Catskill sandstone Ontario and Western railroad 



tunnel between Merrickville 

 and North Walton, Dela- 

 ware co. N. Y. 



C. S. Prosser, coll. 1897 



