Subject ASC0003tfj
The geological magazine, or, Monthly journal of geology.
Decade 3:v. 7 (1890), Page 419 (1890)
Smithsonian Libraries
BHL Page 30522403
Keywords
heteraster oblongus neocomian shell ostrea macroptera Heteraster oblongus Ostrea macroptera Neocomian moluscs ostrea maropetra moluscs upper lower surface test meocomian fossil