Subject ASC000137e

The Quarterly journal of the Geological Society of London.
v.50 (1894), Page 427 (1894)
Smithsonian Libraries
BHL Page 39089211

Keywords

trilobite fossils fossil section longitudinal section legs limbs lobes Calymene senaria Walcott Apus spitzbergensis Lepidurus spitzbergensis Bernard enrolled Calymene ventral surface Fossil trilobyte calymene senaria lepidurus calymene

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Species