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Clausa d'Orbigny, 1853


Scanning electron micrograph of slender branch of Clausa heteropora.

Clausa heteropora (d'Orbigny, 1850)
Scanning electron micrograph (pdt1734) of infertile branch
MNHN R61539b, d'Orbigny Collection, ?syntype, Cenomanian, Le Mans, Sarthe, France