A columnal-bearing eocrinoid from the Cambrian Burgess Shale
(British Columbia, Canada)

Colin D. Sumrall; Samuel Zamora

doi:10.1017/jpa.2014.54

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Colin D. Sumrall,¹ Samuel Zamora^2,3

¹Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, USA, ⟨ ⟩ csumrall@utk.edu
²Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington DC, 20013-7012, USA
³Current address: Instituto Geológico y Minero de España, Manuel Lasala 44, E-50006 Zaragoza, Spain, ⟨ ⟩ s.zamora@igme.es

Abstract

A new eocrinoid ?Ubaghsicystis sp. from the middle Cambrian (Series 3, Stage 5) Burgess Shale is reported based on a single known specimen. This species extends the stratigraphic range of columnal-bearing eocrinoids in Laurentia significantly from Cambrian Stage 7 (Guzhangian) to Stage 5. It increases the diversity of echinoderms in this well-known fossil-Lagerstätte, provides the oldest evidence of columnal-bearing eocrinoids from Laurentia, and further documents the cosmopolitan distribution of middle Cambrian echinoderm clades.

Citation Download Citation

Colin D. Sumrall and Samuel Zamora "A columnal-bearing eocrinoid from the Cambrian Burgess Shale(British Columbia, Canada)," Journal of Paleontology 89(2), 366-368, (1 March 2015). https://doi.org/10.1017/jpa.2014.54

Accepted: 1 September 2014; Published: 1 March 2015

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