Edrioasteroidea from the Seifen Formation of the Westerwald, Rhenish Slate Mountains (Lower Devonian, Germany), part 2: Sumrallia rseiberti gen. et sp nov.

摘要

A new agelacrinitid edrioasteroid, Sumrallia rseiberti gen. et sp. nov., is introduced. Its morphology, with respect to different ontogentic stages, is described and figured, and its systematic position is discussed. Furthermore, synecological interactions of this edrioasteroid with brachiopods, bryozoans, and auloporid corals are documented. The new taxon supplements the highly diverse and extraordinarily well-preserved edrioasteroid fauna from the Holzbach Valley at Seifen in the Westerwald (Siegenian, Rhenish Slate Mountains).