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†Spirigerina (Eospirigerina) Boucot & Johnson 1967
urn:lsid:organismnames.com:name:2424119
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90
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†Spirigerina (Eospirigerina) Boucot & Johnson 1967
Boucot & Johnson 1967. Silurian and Upper Ordovician atrypids of the genera Plectatrypa and Spirigerina. Norsk Geologisk Tidsskrift, 47 1967: 79-102