564 JOSIAH BRIDGE 



depth of about one-eighth of an inch. It is somewhat leached, but 

 otherwise is scarcely weathered. The following fauna was obtained : 



Fauna of Bowlder 28, Locality 7 

 Coelenterata 



Zaphrentidae 



Gen. ? sp. ? 

 Cyathaxonidae 



Cyathaxonia sp. 

 Echinodermata 



Platycrinus sp. (stem fragments) 

 Unidentified stem and other fragments 

 Molluscoidea 



Fenestella burlingtonensis Ulr. ? 

 Rhombopora sp. 

 *Productus sampsoni Weller ? 

 Rhipidomella diminutiva Rowley 

 Camarotoechia tuta (Miller) 

 *Dielasma fernglenensis Weller 

 Terebratuloid shell gen. ? sp. ? (3 forms) 

 *Cyrtina burlingtonensis Rowley 

 Spirifer sp. (small form, probably young shell) 

 *Spiriferina subtexta White 

 *Brachythyris fernglenensis Weller ? 

 Ambocoelia levicula Rowley 

 Ambocoelia sp. 



Reticularia cooperensis (Swallow) 

 *Ptychospira sexplicata (W. &. W.) 

 *Athyris lamellosa (Leveille) 

 *Cliothyridina glenparkensis Weller ? 



A comparison of this fauna with the Fern Glen fauna described 

 by Weller 1 shows that the two have very close relationships. 

 While the fauna of this bowlder is not as large as that of the 

 Fern Glen, the majority of its determined forms are identical with, 

 or closely related to, Fern Glen species. In the faunal list given 

 above the species occurring in the Fern Glen fauna have been 

 designated by an asterisk. Of the ten certainly identified brachi- 

 opods, six are recorded in the Fern Glen fauna, and three others, 

 doubtfully identified, are also represented in the Fern Glen. The 



1 Stuart Weller, "Kinderhook Faunal Studies, V, The Fauna of the Fern Glen 

 Formation," Bid. Geol. Soc. Amer., XX (1909), 265-332. 



