Subject ASC000119w

The Quarterly journal of the Geological Society of London.
v.56 (1900), Page 463 (1900)
Smithsonian Libraries
BHL Page 41487819

Keywords

monograptus colonus sicula thecae proximal thecae distal thecae monograptus graptolite Lower Ludlow fossils geology Monograptus colonus

Contributors

Species