Acta Palaeontologica Polonica

Acta Palaeontologica Polonica

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Typically, they are robust and straight, except for a few forms that are partially or totally recurved (AT. yukonensis, M. langgunensis , M. falcarius) or ... In M. microdon, even in very distal thecae growth of the hood is accomplished before any fusellus of the succeeding theca is formed. ... Sketches slightly diagrammatic. Brokenanbsp;...

Title:Acta Palaeontologica Polonica
Publisher: - 1978


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