Subject ASC0003vql
The geologist : a popular monthly magazine of geology.
Vol.4 (1861), Page 141 (1861)
Natural History Museum Library, London
BHL Page 46206813
Keywords
Cephalaspis Lyellii red sandstone eludlow marston head cephalaspis genus osteostraci fish detritivorous fossil Ludlow Old Red Sandstone old red old red sandstone strata ludlow preserved head ancient fishes ancient fish