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Rodzaj Deliella
Gatunek typowy Opis Small, dorsal valve subconical with beak posteriorly subcentral; anterior face convex and posterior subplanar; ornament of fine costae, branching costellae, and capillae; fine concentric growth lines forming a netlike granular pattern at intersection with radial ornament; encrusting; ventral valve not known. Synonimy Zasięg czasowy Early Devonian (Emsian) to Mid Devonian (Givetian) of Poland, Germany, Ukraine, Morocco and North America. Literatura |
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