Edited by oilshale
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Triacrinus elongatus FOLLMANN, 1887
Images: 
By oilshale (edited)
Taxonomy
Crinoid
Kingdom: Animalia
Phylum: Echinodermata Klein 1754
Class: Crinoidea Miller 1821
Order: Incertae sedis
Family: Incertae sedis
Genus: Triacrinus
Species: Triacrinus elongatus
Author Citation FOLLMANN, 1887
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
Length: 14 cm
Location
Eschenbach-Bocksberg Quarry
Bundenbach
Rheinland-Pfalz
Germany
Comments
Taxonomy according to Fossilworks.org.
Characteristics of the genus according to Südkamp 2017, p. 110: “The cup is cone-shaped. The arms are very long, unbranched and without pinnules. They consist of elongate elements. The anal sac is arm-like. The round stem consists of low elements proximally.”
T. elongatus is characterized by arms that can be more than 20 times the height of the cup.
Identified by oilshale using Südkamp 2017.
References:
Follmann, O. (1887) Unterdevonische Crinoiden. Verhandlungen des Vereins Rheinland, xliv 1887: pp. 113-138.
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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