GEOLOGICAL LITEHATURE OF THE VIRGINIA COASTAL PLAIN. 43 



1005 



Wai;d, T.esti:r F. with the collaboration of Fontaine^ W. M., BinRixs. 

 A., and Wi eland, G. E. 



Status of the Mesozoic Floras of the United States. Mono. U. S. Geol. Survey. 

 vo]. xlviii, 616 pp., 119 pis., 11 figs. 



The various plant-bearing beds of the Potomac deposits in Virginia are described 

 and lists given of the plants occurring at each place. Most of the species named are 

 described and figured. In a columnar section the Potomac deposits in Virginia are given 

 a thickness of 525 feet, of which the lower 350 feet are designated as the James River 

 and Rappahannock beds, and correlated with the Arundel and Patuxent formations ; 

 above are the Mount Vernon beds with a thickness of 25 feet and correlated with the 

 base of the Patapsco formation ; and at the top are the Brook beds. 150 feet in thickness, 

 which are correlated with the upper part of the Patapsco formation. The author 

 believes all of the Potomac strata are Cretaceous in age. 



1906 



Berry, Edward W. Pleistocene Plants from Yirgmia. 



Torreya, vol. vi, pp. 88-90, 1906. 



Contains brief description of the fruit of the hickory, grape, beech, cypress, and 

 black gum found in the I'leistocene swamp deposits near Tappahaunock on the Rappahan 

 nock River. 



Berry, Edward W. and Gregory, William K. Prorosmarus alleni, a 

 New Genus and Species of Walrus from the Upper Miocene of Yorktown. 

 Virginia. 



Amer. Jour. Sci., 4th ser., vol. x.xi, pp. 444-450, tigs. 1-4, 1906. 



Contains a description of half of a lower jaw of a walrus found on the beach at 

 Yorktown washed from the fossiliferous Miocene beds that form the cliffs at that point. 



Clark, Wm. Bullock and ^Iatheavs, Edward B. Report on the 

 Physical Features of Maryland. 



Md. Geol. Surv., vol. vi, pt. 1, 1906, pp. 27-251, pis. 2-23. 



Frequent references are made to Virginia and the relations of the entire Coastal 

 Plain of which Virginia is a part. 



EiEs, Heinrich. The Clay Deposits of the Virginia Coastal Plain with 

 a chapter on the Geology of the Virginia Coastal Plain by William Bullock- 

 Clark and Benjamin LeEoy Miller. 



Geol. Survey of Virginia, Geol. ser., Bull. No. 2, 184 pp., 15 pis., 10 figs., 1906 

 Contains a detailed accoimt of the localities in the Virginia Coastal Plain where 

 the clay deposits are now being utilized and a brief sketch of the geology of the region. 



Shattuck, G. B. Md. Geol. Survey. Pliocene and Pleistocene. 391 pp.. 

 75 pis., Baltimore, 1906. 



Many references are made to the Pliocene and Pleistocene deposits of Virginia. Most 

 of the species described from the Maryland deposits also occur in Virginia. 



