Pratt and Smith : Petroleum Resources.] 



[Phil. Journ. Sci., VIII, A, No. 5. 



PLATE IV. 



Fossils from the Canguinsa sandstone (middle or lower Miocene) and from the Vigo shale 

 (lower Miocene or Oligocene). Fig. 1. Conus loroisii Kien. 2. Conus ornatissimus K. Mart. 

 3. Pyrula bucephala Lam. (?) 4. Tapes rimosa Phil. 5. Corbula socialis K. Mart. 6. Conus 

 djarianensis K. Mart. 7. Indet. 8. Hindsia sp. 9. Area sp. 10. Cyclolites sp. 11. Strombus 

 triangulatus K. Mart. (?) About one-half natural size. 



