Between Plum Point & Dares \7ha: 
.•>: ; f 
wharf and extending northward for 1/4 kilometer) is 
as follows at Base; 
fa)-Shell band at water level containing many 
s^all Pec ten and large numbers of Glyciraeris 
n _irilis , and a few Ecphora at base of cliff and 
probably extending below water level:-exposed 
layer 2-3 feet in thickness. 
j (b)-Above this is a layer of greenish sandy cla; 
5-6 feet in thickness,carrying imperfectly fossil-| 
ized shells and casts of others (shells not very 
lentiful). 
c)-Above this is a shell band 2 - 2.5 feet in 
thickness,carrying a number of shells. 
(d)-Above this is a layer of compact greenish 
sandy clay, several feet in thickness. 
fhese layers can be traced with little difficult; 
to point where skulls were collected on August 16 
and August 30,1925. 
As Zone 10 (of Shattuck) is given in the Mary¬ 
land Miocene 2ext as 9 feet in thickness 1 mile 
south of Plum Point wharf, layers a-c o f the 
above section must fall within the limits of 
Shattuck 1 s zone 10. Accordingly the skull must 
have been collected in the unfossiliferous 
Zone 11 , which is 13 feet thick at a point 1.5 
miles south of Plum Point Wharf, Maryland. 
