Subject ASC000119y
The Quarterly journal of the Geological Society of London.
v.56 (1900), Page 457 (1900)
Smithsonian Libraries
BHL Page 41487813
Keywords
Graptolite x5 enlargement proximal extremity distal thecae no reference to what sketches are of in text botany Monograptus tumescens tumescens proximal extremity sicula