Subject ASC00011hw

The Quarterly journal of the Geological Society of London.
v.56 (1900), Page 478 (1900)
Smithsonian Libraries
BHL Page 41487834

Keywords

fossil graptolite Monograptus scanicus Lower Ludlow formation diagram microscope illustration thecae plant Aberdew Hill sicula monograptus scanicus extremity thecase monograptus

Contributors

Species