TYPE SPECIMENS OF PALEOZOIC FOSSILS 27 1 



oriskania Hall & Clarke 



Oriskania sinuata Clarke 

 1652 ££*£ type Oriskania sinuata Clarke. New York state 

 museum memoir 3. 1900. p. 38, pi. 5, fig. 9, 10. 



Oriskanian Becraft mountain, Hudson N. Y. 



J. M. Clarke, coll. 

 1(, 53 "2" type Clarke. New York state museum memoir 3. 1900. 



1*1. 5> fi g- "• 



Oriskanian Becraft mountain, Hudson N. Y. 



J. M. Clarke, coll. 



1654 ™r~ type: plastotype New York state museum memoir 3. 



I9OO. pi. 5, fig. T2. 



Oriskanian Becraft mountain, Hudson N. Y. 



J. M. Clarke, coll. 

 orthis Dalman 



Orthis alsus see Rhipidomella alsa 



Orthis arcuaria Hall & Clarke 



1655 l*£2- type Orthis arcuaria Hall & Clarke. Paleontology 



of New York. 1892. v. 8, pt 1, p. 224, pi. 5C, fig. 20, 21. 



Hall & Clarke. 14th annual report of the New York 

 state geologist. 1895. pi. 4, fig. 13, 14. 



Niagaran Perry county, Tenn. 



James M. Safford, donor 



Orthis bi sulcata see Cyclospira bisulcata 



Orthis c 1 e o b i s see Rhipidomella cleobis 



Orthis costalis Hall 



1656 7 y I type Orthis costalis Hall. Paleontology of New 



York. 1847. 1 : 20, pi. 4 bis, fig. 4b (first). 



Chazy limestone Chazy N. Y. 



Orthis elegantula see Dalmanella elegantula 

 Orthis? e r r a t i c a see Zygospira (Orthonomaea) 

 erratica 



Orthis (?) holstoni Safford 

 ,6 57 12.22. TY p E rthis (?) holstoni (Safford ms.) Hall & 



Clarke. Paleontology of New York, 1892. v. 8. pt 1, 



I>i. 5 A > fi g- 35 37- 

 Trenton horizon Near Nashville Tenn. 



Janus M. Safford, donor 

 Orthis hybrid a see Rhipidomella hybrida 

 Orthis in te rl i„n eal a see Schizophoria tioga 



