TYPE SPECIMENS OF PALEOZOIC FOSSILS 225 



1 3 2 9 1S £ A hypotype Hall & Clarke. Paleontology of New York. 



1894. v. 8, pt 2, pi. 28, fig. 53. 



Hamilton beds Thedford Ont. 



Cyrtina triquetra Hall 



1330 -— f- hypotype Cyrtia triquetra Hall. Geological survey 



of Iowa. 1858. v. 1, pt 2, p. 513. 



Cyrtina triquetra Hall & Clarke. Paleontology 

 of New York. 1894. v. 8, pt 2, pi. 28, fig. 34, 35. 



Hamilton beds Davenport la. 



Cyrtina umbonata Hall var. alpenensis Hall & Clarke 



1 33 1 --!-- type Cyrtina umbonata Hall var. alpenensis 



Hall & Clarke. Paleontology of New York. 1894. 

 v. 8, pt 2, p. 362, pi. 28, fig. 18. 



Hamilton beds Alpena Mich. 



1 33 2 — 2 liL type Hall & Clarke. Paleontology of New York. 1894. 



v. 8, pt 2, pi. 28, fig. 19. 



Hamilton beds Alpena Mich. 



1333 — . 5 S - type Hall & Clarke. Paleontology of New York. 1894 



v. 8, pt 2, pi. 28, fig. 20. 



Hamilton beds Alpena Mich. 



Cyrtina varia Clarke 

 J 334 ~i-- type : plastotype Cyrtina varia Clarke. New York 

 state museum memoir 3. 1900. p. 49, pi. 6, fig. 15. 

 Oriskanian Becraft mountain, Hudson N. Y. 



1335 T 8 jf g type Clarke. New York state museum memoir 3. 1900. 



pi. 6, fig. 16-18. 



Oriskanian Becraft mountain, Hudson X. Y. 



I 33^> —•y 1 '- type Clarke. New York state museum memoir 3. 1900. 

 pi. 6, iig. 19. 



Oriskanian Becraft mountain, Hudson \.Y. 



1337 - 7 - 4 - ,! type Clarke. New York state museum memoir 3. kjoo. 

 pi. 6, fig. 20, 2r. 



Oriskanian Becraft mountain, Hudson N. \. 



1 336 1 \ H ' : ' TYPE Clarke. New York state museum memoir 3, 1900. 



pi. 6, fig. 22. 



Oriskanian Becrafl mountain, Hudson \. \ 



