J4 NEW YORK STATE MUSEUM 



Archaeocyathellus rensselaericus Ford (sp.) 



53 ZSULI. TYPE Archaeocyathellus? rensselaericus 



Ford. American journal of science and arts, 3d ser. 

 1873. 5:211, 212, fig. i. 



Ethmophyllum rensselaericum Walcott. 

 U. S. geological survey bulletin 30. 1886. pi. 5, fig. if. 



Lower Cambric Troy N. Y. 



S. W. Ford purchase 

 Archaeocyathus rarus see Archaeocyathellus 



rarus 



ARYSTIDICTYA Hall & Clarke 



Arystidictya nodifera Hall & Clarke 



54 -2-QjS-Q. PLASTOTYPE Arystidictya nodifera Hall & 



Clarke. New York state museum memoir 2. 1898. 

 p. 137, pi. 41, fig. n. 



Lower Chemung beds Cotton hill, near Avoca N. Y. 



BOTRYODICTYA Hall & Clarke 

 Botryodictya ramosa Lesquereux (sp.) 



55 3 - i f s HYPOPLASTOTYPE Dictyophytum ramosum Les- 



quereux. Description coal flora Carboniferous formation 

 Pennsylvania and United States. 1884. 3:827. 



Botryodictya ramosa Hall & Clarke. New 

 York state museum memoir 2. 1898. pi. 13, fig. 5. 



Chemung beds Lawrenceville Pa. 



CALATHOSPONGIA Hall & Clarke 

 Calathospongia carceralis Hall & Clarke 



56 2 - 1 1 5 - a PLASTOTYPE Calathospongia carceralis Hall 



& Clarke. New York state museum memoir 2. 1898. 

 p. 157, pi. 52, fig. 2. 



Waverly beds Richfield O. 



57 2 TYPE Hall & Clarke. New York state museum memoir 2. 



1898. pi. 60, fig. i, 2. 



Keokuk beds Crawfordsville Ind. 



A. S. Tiffany purchase 

 Calathospongia carlli Hall & Clarke 



58 *^- TYPE Calathospongia carlli Hall & Clarke. New 



York state museum memoir 2. 1898. p. 158, pi. 52, fig. 4, 5. 

 Waverly beds Near Pleasantville Pa. 



J. F. Carll, donor. 1899 



