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†Biparetis Amsden 1974

urn:lsid:organismnames.com:name:2099316

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†Biparetis Amsden 1974

Amsden 1974. Late Ordovician and Early Silurian articulate brachiopods from Oklahoma southwestern lllinois, and eastern Missouri. Bulletin Okla geol Surv, 119 1974: 1-154