MARYLAND GEOLOGICAL SURVEY 



ST. MARY'S COUNTY, PLATE IV. 



CHARACTERISTIC FOSSILS Ol" THE .MIOCENE OF ST. MARY S COUNTY. 



1. Carcharias egertoni (Agassiz). 7. Turritella plebeia Say. 



2. Oliva LiTTERATA Lamarck. 8. Mangilia parva (Conrad). 



3. ECPHORA QUADRICOSTATA (Say). 9. MaCTRA CLATHRODON Lea. 



4. FuLGUR FusiFORME Conrad. lo. Arca STAMiNEA Say. 



5. SuRCULA BiscATENARiA Conrad. II. Isocardia MARKOEi Conrad. 



6. CoLUMBELLA COMMUNIS (Conrad). 12. Spisula SUBPONDEROSA (d'Urb.). 



3. AsAPHis CENTENARiA (Conrad). 



4. Chione alveata (Conrad). 



5. Pecten madisonius Say. 



6. Venericardia granulata Say. 



7. Scutella aberti Conrad (laters 



8. AsTBANGiA lineata (Contad). 



