PLATE XVIII. 



Page. 



I^iariiE 1. Mi/rini u Ih-oxriisis Bern' Iniiu ( IreJUuUi l'<irm;itioii at Grenada, Mi.-^s 188 



FiGLiRE 2. Mijrirti chciuioides Lesc)iiercux rmm Lagraniic formatiim (in beds of Wilcox age) at Boaz, Ky 188 



Figures 3-5. Juglans schimpcri Lesquereux from Wili-ox <,'i-oiip at Coushatta, La. (after Itollick) 182 



367 



