MARYLAND GEOLOGICAL SURVEY. 



CALVERT COUNTY, PLATE IV. 



CHARACTERISTIC FOSSILS OF THE MIOCENE FORMATION'S OF CALVERT COUNTY. 



1. Carcharias EGERTONi (Agassiz). 



2. Oliva litterata Lamarck. 



3. EcPHORA quapricostata (Say). 



4. FuLGiR FUSiFORME Coiirad. 



5. SuRcuLA biscatenaria Conrad. 



7. TURRITELLA PLEBEIA Say. 



8. Mangilia parva (Conrad). 



9. Mactra clathrodon Lea. 



10. Arca STAMiNEA Say. 



11. IsocARDiA MARKOKi Conrad. 



13. ASAPHIS CENTENARIA (Coflrad). 



14. CmoNE ALVEATA (Conrad). 



15. Pecten MADisoNius Say. 



16. N'exericardia granulata Say. 



17. ScuTELLA ABERTi Conrad (lateral view). 



6. CoLUMBELLA COMMUNIS (Conrad). \2. Spisula si'BPONDEROSA (d'Orb.). 18. .\strangia LiNEATA (Conrad) 



