TYPE SPECIMENS OF PALEOZOIC FOSSILS 27! 



ORISKANIA Hall & Clarke 



Oriskania sinuata Clarke 



1652 3.S-JJL 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. 



1653 "2" TYPE Clarke. New York state museum memoir 3. 1900. 



pi. 5, fig. ii. 



Oriskanian Becraft mountain, Hudson N. Y. 



J. M. Clarke, coll. 



1654 i^& 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 



Orthis alsus see Rhipidomella alsa 



Orthis arcuaria Hall & Clarke 



1655 lil r- TYPE Orthis arcuaria Hall & Clarke. Paleontology 



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



Hall & Clarke. i4th 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 see Rhipidomella cleobis 



Orthis costalis Hall 



!6^6 .19_2 j, TYPE Orthis costalis Hall. Paleontology of New 

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



Chazy limestone Chazy N. Y. 



Orthis elegantula see Dalmanella elegantula 

 Orthis? erratica see Zygospira (Orthonomaea) 

 erratica 



Orthis (?) holstoni Safford 



1657 !**- TYPE rthis (?) holstoni (Safford ms.) Hall & 



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

 pi. 5A, fig. 35-37. 



Trenton horizon Near Nashville Tenn. 



James M. Safford, donor 



Orthis hybrida see Rhipidomella hybrida 

 Orthis interlineata see Schizophoria tioga 



