Subject ASC0003yur
The geologist : a popular monthly magazine of geology.
v.4 (1861), Page 137 (1861)
American Museum of Natural History Library
BHL Page 47658846
Keywords
Cephalaspis fossil marine fish freshwater water stream jawless powrie collection Osteostraci Palaeozoic armour detritivorous cephalaspides primeval fish Fish prehistoric cephalaspis