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brachiopod Strophomenides
Poloniproductus varians (Biernat, 1966).
upper Efeilian
el Otfal
Mrakib, Morocco
size: longest spine : 6 cm stone 15 / 10 cm
bibliographic reference: Balinski and Halamski, middle devonian Brachiopods from the southern Maïder, Annales Societatis Geologorum Poloniae, 2013.