PLATE LXXIX 



PAGE 



Fig. 1. CISSITES FORMOSUS Heer 855 



Restoration. (After Heer.) 



Fig. 2. Restoration of a Raritan specimen of the same 855 



Fig. 3. Restoration of CISSITES DENTATO-LOBATUS Lesquereux 855 



A Dakota sandstone species. 



975 



