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†Pachyaspis typicalis Resser 1939
urn:lsid:organismnames.com:name:3150010
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†Pachyaspis typicalis Resser 1939
Resser 1939. The Ptarmigania strata of the Northern Wasatch Mountains. Smithsonian Miscellaneous Collections, 98(24) 1939: pp. 1-72