HELL CREEK BEDS, CERATOPS BEDS AND EQUIVALENTS 219 



at over fifty localities, and when these are brought together in a single 

 list we have no less than 193 forms that have thus far been found in 

 the lower member of the Fort Union. After eliminating the new 

 forms, and those not specifically named, we have the following 84 

 species that are positively identified:^* 



a List of plants identified in lower Fort Union. 



*AraIia not at a Lesq. 

 *Berchcmia midtinervis (Al. Br.) Heer. 

 *Carpolithes lineatus Newb. 

 *Celastrus alnifoliiis Ward. 

 ^Cclastrus airvinervis Ward. 

 *Celastn<s ferrugineus Ward. 

 ^Celastrus ovatus Ward. 

 ^Celastrus pterospermoides Ward. 

 ^Celastrus taiirinensis Ward. 

 *Cinnamomum affine Lesq. 

 *Coccidus haydenianus Ward. 

 ^Corniis newberryi Hollick. 

 *Corylus americana Walt. 

 *Corylus rosirata Ait. 

 *Credneria daturafolia Ward. 

 ^Diospyros haguei Kn. 

 ^Elaodendron polymorphum Ward. 

 ^Equisetum prelavigatum Cockerell. 

 *Ficus artocarpoides Lesq. 

 *Ficus spectabilis Lesq. 



Ficus trine wis Kn. 



Flabellaria eocenica Lesq. 

 ^Ginkgo adiantoides (Ung.) Heer. 

 *Glyptostrobi{s europcciis (Ung.) Heer. 

 '^Glyptostrohiis etiropaus Ungeri Heer. 



Grewiopsis eocenica (Lesq.) Kn. 

 *Grewiopsis platanifolia Ward. 



'* It should not be supposed that when the several undoubtedly new species, 

 together with such of the unnamed forms as may be subsequently allocated, 

 shall have been worked up in detail, the relation to the upper member of 

 the Fort Union will be less marked. On the contrary it is likely to increase 

 the number of species common to the two members, especially as there are 

 large unworked collections, belonging certainly to the upper member, with 

 which they may be compared. It will be observed that the unnamed forms 

 in the lists belong largely to such genera as Populus, Platanus, Viburnum, 

 Hicoria, Planera, Quercus, Sequoia, Taxodium, Carpites, etc., which are 

 strongly represented in the Fort Union; indeed, certain of these genera (e.g., 

 Taxodium, Planera, Glyptostrobus) are not known to be present in the 

 Laramie. 



