Edited by oilshale
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By oilshale (edited)
Crinoid
Kingdom: Animalia
Eon: Phanerozoic
Era: Paleozoic
Period: Devonian
Sub Period: None
Epoch: Early
International Age: Early Emsian
Hunsrück Slate Group
Kaup Formation
Herrenberg Member
Collector: T. Bastelberger
Date Collected: 06/01/1977
Acquired by: Field Collection
Height: 20 cm
Heap pile "Grube Herrenberg"
Bundenbach
Rhineland-Palatinate
Germany
Taxonomy from Fossilworks.org.
Description from Südkamp 2017, p. 111: " Cup small, low and cone-shaped. The long and slender, non-pinnulated arms divide three to four times isotomously above the sixth to ninth primibrach in variable positions. The anal sack is slender and elongate and composed of several vertical rows of plicate plates. The stem is round with pentangular proximal elements."
Of the 5 species described, P. zeaeformis has a relatively truncated cup. The anal sack has the appearance of a cob of maize (long and mostly curved).
Identified by oilshale.
References:
W. Erich Schmidt (1934) Die Crinoideen des Rheinischen Devons. Abhandlungen der Preußischen Geologischen Landesanstalt. Neue FolgeHeft 163, pp.1-148.
C. Bartels, M. Poschmann, T. Schindler & M. Wuttke (2002) Palaeontology and palaeoecology of the Kaub Formation (Lower Emsian, Lower Devonian) at Bundenbach (Hunsrück, SW Germany) Metalla (Bochum) 9.2, 2002, 105-122.
G. D. WEBSTER & C. G. MAPLES (2006) CLADID CRINOID (ECHINODERMATA) ANAL CONDITIONS: A TERMINOLOGY PROBLEM AND PROPOSED SOLUTION. Palaeontology, Vol. 49, Part 1, 2006, pp. 187–212.
Edited by oilshale
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