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New long-stemmed eocrinoid from the Furongian Point Peak Shale Member of the Wilberns Formation, central Texas

Published online by Cambridge University Press:  09 March 2015

Samuel Zamora ,
Colin D. Sumrall  and
James Sprinkle
Samuel Zamora
Affiliation:
Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington DC, 20013-7012, USA, Instituto Geológico y Minero de España, C/Manuel Lasala, 44, 9ºB, 50006, Zaragoza, Spain 〈samuel@unizar.es〉
Colin D. Sumrall
Affiliation:
Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, USA; 〈csumrall@utk.edu〉
James Sprinkle
Affiliation:
Department of Geological Sciences, Jackson School of Geosciences, University of Texas, Austin TX, 78712-0254, USA; 〈echino@jsg.utexas.edu〉
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Abstract

Llanocystis wilbernsensis n. gen. n. sp. (Eocrinoidea, Echinodermata) is described based on three specimens from the Furongian Point Peak Shale Member of the Wilberns Formation in central Texas. It displays a unique morphology including a very long stem constructed with holomeric columnals, few feeding appendages, and a polyplated theca. The specimens occur in an intraformational conglomerate deposited in a proximal carbonate platform environment and represent an example of the poorly documented “pelmatozoan” radiation that occurred in proximal facies by the end of the Cambrian.

Type
Articles
Information
Journal of Paleontology , Volume 89 , Issue 1 , January 2015 , pp. 189 - 193
Copyright
Copyright © 2015, The Paleontological Society 

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