Subject ASC00011ld
The Quarterly journal of the Geological Society of London.
v.56 (1900), Page 131 (1900)
Smithsonian Libraries
BHL Page 41487429
Keywords
plant climacograptus parvulus fossil Rhayader district Graptolite Graptolites Climacograptus parvulus leaf leaves Diplograptus magnus Rhayader Wales aspeet diplograptus size botany