Eens. 



856 



of the last two lower premolar and first molar teeth of the 

 left jaw of a Rangifer caribou^ "barren ground reindeer" of 

 the Canadian provinces, proving the coldness of climate which 

 pervaded Pennsylvania when the Greenland glaciers covered 

 the present sites of New York city and Cincinnati, and the 

 walrus lived as far south as the Carolinas. RecenU 



Rensselaeria ^q}xiYa.didit^\{Atrypa wquiradiata. Conrad, 





Vol. ui. fs^s-?. 



Jour. Acad. N. Sc. Phila. Vol. 8, 1842, Lower Helderherg.) Hall,, 

 Pal. N. Y. Vol. 3, lo57, page 255, plate 45, selected figs. 8 a, J, 

 Gs d^ dorsal, ventral, profile and front views; a large specimen 

 which is proportionally longer than ufiual. Surface marked 

 with simple regular radiating striae, much stronger toward the 

 edge. Like but much larger than R. mutalilis. In N. Y. 

 along the Mohawk valley outcrop of the Upper Pentamerus 

 {Low. Held.) limestone. VL 



Rensselseria ? johanni, Hall. 



ym a 



PaL^ontology of the 



17. 



Hall. 



Fctl.N.y.iv 



Half. '-^ 



Vo/./VAq 

 State of New York, Vol. 4, 1867, page 385, plate 58 A, se- 



