Meek, F. B. (1872). Descriptions of new western Palaeozoic fossils, mainly from the Cincinnati Group of the Lower Silurian Series of Ohio. Proceedings of the Academy of Natural Sciences of Philadelphia. 23: 308-337 ["1871"].
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Meek, F. B.
1872
Descriptions of new western Palaeozoic fossils, mainly from the Cincinnati Group of the Lower Silurian Series of Ohio
Proceedings of the Academy of Natural Sciences of Philadelphia