TYPE SPECIMENS OF PALEOZOIC FOSSILS 729 



Mesothyra (Dithyrocaris?) veneris ^ 

 Rhinocaris veneris 



microdiscus Emmons 



Microdiscus meeki Ford 



4587 !£i!3 type Microdiscus meeki Ford. American journal 



of science and arts, ser. 3. 1876. 11:371 (not figured ; 

 original of description). 



Walcott. United States geological survey bulletin 30. 

 1886. pi. 16, fig. 4. 



Walcott. 10th annual report of the director of the 

 United States geological survey. 1890. pi. 81, fig. 3. 



Lower Cambric Troy N. Y. 



S. W. Ford purchase 



Microdiscus speciosus Ford 



4588 13 i 44 type Microdiscus speciosus Ford. American 



journal of science and arts, ser. 3. 1873. 6:137, fig. 2a. 

 Lower Cambric Troy N. Y. 



S. W. Ford purchase 



4589 13 % 4 - type Ford. American journal of science and arts, ser. 3. 



1873. 6: [37, fig. 2b. 



Lower Cambric ■ Troy N. Y. 



S. W. Ford purchase 



4590 13 % 4 - hypotype Ford. American journal of science and arts, 



ser. 3. 1877. 13:141 (not figured). 



Walcott. United States geological survey bulletin 30. 

 1886. pi. 16, fig. 3, 3a. 



Lower Cambric Troy N. Y. 



S. W. Ford purchase 



4591 "I 4 - 4 hypotype Walcott. United States geological survey 



bulletin 30. 1886. pi. 1 6, fig. 3b. 



Lower Cambric Troy N. Y. 



S. W. Ford purchase 



moorea Jones & Kirkby 



Moorea kirkbyi Jones 



4592 ***** type Moorea k i r k b y i Jones. Quarterly journal 



of the geological society of London. 1890. 46:542, pi. 20, 

 fig. 9a, 9 b. 



Onondaga limestone (drift) Canandaigua, 



Ontario co. N. Y. 

 J. M. Clarke purchase 



