_ 9/1 P 



Genns PITOA'^^^ ' LanHrck. 



Zli.oat2ila densa;^ Oorrad, 1845, -roe. Acad. Pat. .:.. "; ilar^el- 



phia, "-:" . 1 , , "^ "^ . 

 "li^atulu Jensat-, d , 1G45, Jos. Med. Ter., U. 3.. p. 75, 



pl. 45, fio-. 6. 

 Plioatina densata ^o.r,M, 1867, -roc. Acad, .^i:. oci., Philadelphia, 



vol. 14, p. Sir. 



Plieatnla jensa^a Conrad, Ileek, 1-854, Hioc. Check List. Smiths. 



MiBC. Coll., no. 185, n. 4. 

 PlicatTila vexillata C^uppy. 1874, Ceol. tlag., decade 2, vol. 1. 



U.443 (.cInecK |u+) 



p. 456. pl. 17, fig. 7, , (ex oarte). 

 Plioat-Jla d,ensata Conrad, V/hitfield, 1895, !'on. u. 3. Geol. 3urve;-, 



no. 24, pp. 55-55, pl. 5, fic.-s. 5-8. 

 Pli-:atula Jensata Conrad, Dall, 1808, Tr&m . 7/agner Free Inst. 



3ci., Philadelphia, vol. 5, pt. 4, p. 755. 

 Plicatula jdengata Coiirad, Glenn, 1904, IvTaryiand Geol. Survey, 



Miocene vol. p. 571, ol. 98, fips. 7-9. 

 Plicatula ■jensata Coiirad, Dall, 1915, 3iill, U. 3. Nat. luus., no. 



90, p. 1S5. 



description.- "Ovate, thick, proPoimdly and irre.^.asxlv 



