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An ichthyofauna from the subsurface Devonian of northwestern Iowa and its biostratigraphic and paleoecologic significance
Published online by Cambridge University Press: 14 July 2015
Abstract
A fauna of disarticulated Devonian fossil fish remains includes osteolepid, palaeoniscoid, acanthodian, placoderm, and possible agnathan material. Lithologic and biostratigraphic evidence for a lacustrine or paludal environmental interpretation is examined. Palynomorphs from the deposit suggest a Middle (Givetian) to early Late (Frasnian) Devonian age which is compatible with the faunal evidence.
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