October 31,1931 
Invertebrate fossils from section 1 mile east of 
Patuxent,Charles County,Maryland 4 identified by 
W.C. Mansfield, USGS. 
Bcphora cf. B*tricostata Martin (yo.) 
Verraetus sp. 
'urritella indentata Conrad 
Turritella variabilis var.curaberlandia Conrad? 
Turritella plebeia Say cf.var A.of Martin 
ft t» ft f» ft U ft ft 
Hucula sp. 
Leda liciata (Conrad) 
Clycymeria parilis (Conrad) 
Area sp. (yo.) 
Pecton raadisonius Say 
Astarte cuneiforrais Conrad 
^Qprassatellites raelinus (Conrad) 
Yenericardia granulata Say 
phacoides, Z sp. 
Isocardia raarkosi Conrad 
Posinia sp. 
Chi one latilirata (Conrad) 
Cytherea staminea Conrad 
Corbula elevata Conrad 
Corbula inaequalis Say 
Panope goldfussii Wagner 
Balanus sp. 
— * 
Squalodon protervus (Cope) (preraolar) 
? priscodelphinus gabbi Cope (vertebra) 
' T - ; ^ ; * •' 5 > > - •* 
Identified by Mansfield as CALVEKP POHMATIOH, 
probably Zone 10 of Plun Point marls. 
•> * 
J'.. 
