Abstract

The first calcitic thecas of edrioasteroids from the Rheinisches Schiefergebirge are described:Timeischytes leunisseni n. sp.,Timeischytes prescheri n. sp. andRhenopyrgus sp. are from the Middle Devonian of the Eifel Hills. The morphological features ofTimeischytes lead to the assumption that in this genus paedomorphosis has been a long-lasting process. Aus dem Rheinischen Schiefergebirge werden erstmals kalkig erhaltene Edrioasteroideen-Thecen beschrieben:Timeischytes leunisseni n. sp.,Timeischytes prescheri n. sp. undRhenopyrgus sp. stammen aus dem Mittel-Devon der Eifel. Aufgrund der Morphologie der neuenTimeischytes- Taxa wird angenommen, das die Padomorphose innerhalb der Gattung ein langanhaltender Prozess gewesen ist.

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