MARYLAND GEOLOGICAL SURVEY 



ST. MARY'S COUNTY, PLATE X. 



CHARACTERISTIC FOSSILS OF THE PLEISTOCENE OF ST. MARY's COUNTY. 



1. Ilyanassa obsoleta CSay) Dall. 



2. EuPLEURA CAUDATA (Say) Holmes. 



3. PoLYNicES (Neverita) duplicatus (Say) Dall. 



4. FuLGUR canaliculatum (Linne). 



5. HICORIA GLABRA (Mill) Britton. 



6. 7. CORBULA CONTRACTA Say. 



8. Tagelus gibbus (Spengler) Dall. 



Rangia cuneata (Gray) Dall. 

 Arca (Noetia) ponderosa Say. 

 Mya arenaeia Linne. 



Barnea (Scobina) costata (Linne) Dall. 

 Ostrea virginica Gmelin. 

 Tooth of Mastodon. Mammut americanum 

 (Kerr) (greatly reduced). 



