Edited by oilshale
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Medusaster rhenanus Stürtz 1890
Images: 
By oilshale (edited)
Taxonomy
15-armed starfish
Kingdom: Animalia
Phylum: Echinodermata Klein 1754
Class: Stenuroidea Spencer 1951
Order: Incertae sedis
Family: Palaeuridae Spencer 1951
Genus: Medusaster
Species: Medusaster rhenanus
Author Citation Stürtz 1890
Geological Time Scale
Eon: Phanerozoic
Era: Paleozoic
Period: Devonian
Sub Period: None
Epoch: Early
International Age: Emsian (early)
Stratigraphy
Hunsrück Slate Group
Kaub Formation
Provenance
Acquired by: Purchase/Trade
Dimensions
Width: 6 cm
Location
Eschenbach-Bocksberg Quarry
Bundenbach
Rhineland-Palatinate
Germany
Comments
Taxonomy from Fossilworks.org.
Description from Südkamp 2017, p. 132: " Medusaster is a small ophiuroid with generally 11 to 15 arms. They are slender, taper in the distal part and end in blunt extremities. The disc has the same size as the mouth frame, which included the robust mouth-angle plates together with the large triangular second ambulacrals. The ambulacrals are fused into half vertebrae which are mostly aligned with their opposites. The laterals are sickle-shaped and bear some slender spines."
Identified by oilshale.
References:
Stürtz, B. (1890) Neuer Beitrag zur Kenntniss paläozoischer Seesterne. Palaeontographica 36: 203-247.
Südkamp, W. (2017) Life in the Devonian. Identification book Hunsrück Slate fossils. Verlag Dr. Friedrich Pfeil. München 2017. ISBN978-3-89937-221-2.
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