TYPE SPECIMENS OF PALEOZOIC FOSSILS 



271 



oriskania Hall & Clarke 



Oriskania sinuata Clarke 

 1652 l^ui 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. 



^53 - L ^ 1 - type Clarke. New York state museum memoir 3. 1900. 

 pi. 5, fig. 11. 



Oriskanian Becraft mountain, Hudson N. Y. 



J. M. Clarke, coll. 



1654 --3-- type: plastotype New York state museum memoir 3. 



1900. pi. 5, fig. 12. 

 Oriskanian Becraft mountain, Hudson N. Y . 



J. M. Clarke, coll. 



orthis Dalman 

 O r t h i s a 1 s u s see Rhipidomella alsa 



Orthis arcuaria Hall & Clarke 



1655 3 - 2 f s - 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 bisulcata see Cyclospira bisulcata 



Orthis cleobis ^Rhipidomella cleobis 



Orthis costalis Hall 



1656 T y 1 type Orthis costalis Hall. Paleontology of New 



York. 1847. 1 : 2 °> pl« 4 bis, n o- 4-b (first). 



Chazy limestone Chazy N. Y. 



Orthis e 1 e g a n t u 1 a see Dalmanella elegantula 

 Orthis? erratica see Zygospira (Orthonomaea) 



erratica 



Orthis (?) holstoni SafTord 



1657 type rthis (?) holstoni (Safford ms.) Hall & 



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



pi. 5 A, fig. 35-37. 



Trenton horizon Near Nashville Tenn. 



James M. Safford, donor 

 Orthis h y b r i d a see Rhipidomella hybrida 

 Orthis interlineata see Schizophoria tioga 



