228 J. Wyman on Remains of Vertebrated Animals | 
oe: gat 
at Richmond, Virginia; by Jerrries Wyman, M. 
Ann, XX1.—Notice of Remains of Vertebrated Animals found 
Tue remains which are the subject of this notice were dis- f 
covered. in the tertiary beds which form the foundation of the city 
of Richmond, and which extend beyond its limits over a vast 
area. Mr.-Conrad regarded these beds as identical with the Eing- 
lish crag under the name of “medial pliocene,” and Professors 
-. ...W. B. and H. D. Rogers describe them under the name of Mio- 
© cene.* The opinion of these last geologists is confirmed by the 
observations of Sir Charles Lyell.t Prof. W. B. Rogers informs 
-. me in addition that in the bottom of some of the ravines, a stratum 
~ , 4 exists containing Eocene fossils. 
-.._ A large proportion of the bones and teeth here described were 
~ 25. ‘discovered:and exhumed by Dr. Martin Burton of Richmond, in 
_ *. the various ravines which intersect this city and its vicinity, but 
- «9° more especially those at its eastern and western extremity. The 
_ = Jargest*ravine, the one through which Shockoe creek makes its 
¢ 
gin great abundance, and above 
uite numerous, and are Ise for 
recent removal of a portion of 
sharine mud: was expose 
od, still preserving their | 
pic tructure, though ; 
ht Pessute ; 
, from the 
difficult tore © 
hey. were ¢ ‘ 
