Avicula- 

 Avicula- 



71 Avic. 



•? Emmons, page 433, 399, III a. 



•? Rogers, page 827, fig. 663, VIII c, Hamilton 



formation. 



Avicula- 



VIII g 



Avicula 

 Vllf 



? Rogers, page 829, fig. 678. VIII g. Chemung 

 formation. This shell is identified 

 by H. D. Rogers, in GeoL, Pa., 1858, 

 as the European Devonian Avicula 

 (lamnoniensis^ now known as Pteron- 

 ites damnoniensis^ but in America, 

 as Pteronites chemungensis. 



? Rogers, page 829, fig. 679. VIII g. Chemung 

 formation. This shell is said by H. D. 

 Rogers to be somewhat common in the 

 Pannsylvania outcrops of the uppermost 

 beds of the Chemung formation. He 

 considered it to be a new species, but 

 gave it no name. Geology of Pa., 1858, 

 R.67^. page 830. 



Avicula ? Rogers, page 833, fig. 689. A small avicula 



Xlll^/^^issj^-^^^ found in 1857, by Mr. Wm. B. Rogers, Jr., 



in coal slate near the mouth of the Ravens- 

 dale tunnel, a few miles east of Pottsville, 

 in Schuylkill county. This, and a name- 

 less Tellinomya cast, were the first shells 

 ever found in the Anthracite measures. 



