FLORA OF THE FREEPORT GROUP 153 



Name. Locality. 



Cordaicarpon cinctum Lx.* Can. 



' ' costatum Lx.* Can. 



Cardiocarpon marginatum (Art.) Gein.* Can. 



ellipticum (Sternb.) Lx.* Can. 



" pusillum Lx Can. 



Trigonocqrpum adamsii Lx.* Can. 



menzelianum Goepp. & Berg. [Lesq.] Can. 



grande Lx.* Sn. , El. , Can. 



schultzianum Goepp. & Berg. [Lesq.] Can. 



Rhabdocarpos arcuatus Lx Can. 



" subglobosus Lx Can. 



" tenax Lx.* Can. 



" inflatus Lx Can. 



beinertianus Goepp. and Berg Can. 



" jacksonensis Lx.* [Lesq.] Can. 



" (Pad ly testa) mansfieldi Lx.* Can. 



" abnormalis Lx Can. 



mammillatus Lx.* Can. 



Dicranophyllum dichotomum Lx.* Can. 



" dimorplium Lx.* Can. 



Carpolithes cerasiformis Presl* [Lesq.] Can. 



' ' minimus Sternb . . . . , Can. 



" perpusillus Lx Can. 



FREEPORT GROUP 



Plant beds and localities. — The term " Freeport group " has been ap- 

 plied* to the remaining upper portion of the Allegheny series, includ- 

 ing the two Freeport coals, and extending from the top of the Upper 

 Kittanning coal to the top of the Upper Freeport coal. This division of 

 the series is subject to considerable variation, chiefly by the expansion 

 of the two Freeport sandstones ; but in Clarion county it appears to 

 average about 130 feet in thickness. 



In considering the flora accompanying the Upper Freeport coal I in- 

 clude the plants in the roof of that coal, though, strictly speaking, the 

 shales belong to the base of the Mahoning sandstone, as that name is 

 customarily, but often inappropriately, applied. From the roof of the 

 Lower Freeport coal collections of plants have been made at Big Soldier 

 run (R.), near Reynoldsville, Elk run (E. R.), and Horatio (H.), near 

 Punxsutawney, in Jefferson county, and at the Dubois shaft (Dub.) and 

 the Shawmut mines (Shaw.), in Clearfield county. 



The roof of the Upper Freeport coal contains good plant fossils at the 

 Brackenbush mine (Brack.), about 2 miles east of Freeport, at Shenley 



* Report of Progress, Second Geol. Survey Pa., W, pp. 33, 34. 

 XXII— Bull. Geol. Soc. Am., Vol. 11, 1899 



