826 SYSTEMATIC PALEONTOLOGY 



Platanus heerii was identified by Lesquereux from the New Jersey 

 Karitan in collections made from Pettifs pits, South River, but as the 

 material was poor and the species has not since been detected in the New 

 Jersey Earitan this occurrence is usually ignored, although the abundance 

 of this species in the Earitan of Maryland renders its presence in New 

 Jersey probable. Fragments of this species in the Maryland Earitan are 

 very common, but they are usually in a bad state of preservation. The 

 species extends northward to the west coast of Greenland and it shows 

 considerable resemblance to Credneria rhomboidea described by Vele- 

 novsky from the Cenomanian of Bohemia, 1 and subsequently transferred 

 by him to Platanus. 



Occurrence. EAEITAN FORMATION. Drum Point Eailroad near head 

 of Severn Eiver, Anne Arundel County, Maryland; East Washington 

 Heights, District of Columbia. 



Collections. Maryland Geological Survey, U. S. National Museum. 



Genus ASPID1OPHYLLUM Lesquereux 

 [Ann. Kept. U. S. Geol. Survey Terr. (Hayden) for 1874, p. 361, 1876] 



ASPIDIOPHYLLUM TEILOBATUM Lesquereux 

 Plate LX, Figs. 1, 2; Plate LXI, Figs. 1, 2 



Aspidiophyllum trilobatum Lesquereux, 1876, Ann. Kept. U. S. Geol. Sur- 

 vey, Terr. (Hayden) for 1874, p. 361, pi. ii, figs. 1, 2. 



Aspidiophyllum trilobatum Lesquereux, 1883, Cret. and Tert. Fl., p. 87, pi. 

 xii, fig. 1; pi. xiii, figs. 1-5; pi. xiv, fig. 1. 



Aspidiophyllum trilobatum Lesquereux, 1892, Mon. U. S. Geol. Survey, vol. 

 xvii, p. 212. 



Aspidiophyllum trilobatum Berry, 1911, Bull. Torrey Bot. Club, vol. xxxviii, 

 p. 410. 



Description. Medium to large sized leaves, rhomboidal in general out- 

 line, obtusely trilobate. Length 10 cm. to 25 cm. Maximum width, 

 which is across the lobes in the basal half of the leaf, 10 cm. to 30 cm. 

 Base truncate or broadly cuneate, markedly peltate. Lobes broad and 

 rounded. Sinuses open and rounded, extending less than half-way to the 



^elenovsky, Fl. Bohm. Kreidef., Theil i, 1882, p. 11, pi. iii, figs. 2, 3; pi. iv, 

 fig. 1. 



