TYPE SPECIMENS OF PALEOZOIC FOSSILS 



349 



zygospira Hall 



Zygospira (Orthonomaea) erratica Hall 



2172 ? 5 1 9 hypotype : hypoplastotype Orthis? erratica Hall. 



Paleontology of New York. 1847. 1 : 288. 



Zygospira (Orthonomaea) erratica Hall 

 & Clarke. Paleontology of New York. 1894. v. 8, pt 2, 

 pi. 54, fig. 22. 



Lorraine beds Drift block of central New York 



Zygospira minima Hall 



21 73 ^i 2 "- type Zygospira minima Hall. Descriptions of 



new species of fossils from Waldron, Indiana. 1879. p. 14. 



Hall, nth annual report of the Indiana state geologist. 

 1882. pi. 27, fig. 7. 



Niagaran Waldron Ind. 



Zygospira modesta (Say) Hall 



2174 s y 2 hypotype A try pa modesta (Say) Hall. Paleonto- 



logy of New York. 1847. 1 : 141. 



Zygospira modesta Hall & Clarke. Paleon- 

 tology of New York. 1894. v. 8, pt 2, p. 155, fig. 148. 



Cincinnatian Cincinnati O. 



2175 hypotype Hall & Clarke. Paleontology of New York. 



1894. v. 8, pt 2, p. 155, fig. 149. 



Cincinnatian Cincinnati O. 



LAMELLIBRANCHIATA 



actinopteria Hall 



Actinopteria auriculata Hall 



2176 type Actinopteria auriculata Hall. Paleon- 



tology of New York. 1884. v. 5, pt 1, pi. 84, fig. 15. 

 Chemung beds Lawrenceville, Tioga co. Pa. 



A. Sherwood, coll. 187 1 



Actinopteria boydi Conrad (sp.) 



21 77 -^r L hypotype: hypoplastotype Avicula boydi Con- 



rad. Journal of the Academy of natural sciences of Phila- 

 delphia, 1842. 8:237. 



Actinopteria boydi Hall. Paleontology of 

 New York. 1883. v. 5, pt 1, plates and explanations, 

 pi. 19, fig. 7- 



