Subject ASC0000yv5
The Quarterly journal of the Geological Society of London.
v.37 (1881), Page 108 (1881)
Smithsonian Libraries
BHL Page 43972134
Keywords
fossils arenig lower ordivician St. David's Wales natural history species st. david's rhabdophora crustacea layers Arenig Rhabdophora Crustacea fossil paleontology st davids