First report of Crumillospongia (Demospongea) from the Cambrian of Europe (Murero biota, Spain)

 

Authors: García-Bellido DC, Dies Álvarez ME, Gámez Vintaned JA Linán E, Gozalo R

Published in: Bulletin of Geosciences, volume 86, issue 3; pages: 641 - 650; Received 30 December 2010; Accepted in revised form 5 September 2011; Online 21 September 2011

Keywords: Crumillospongia, demosponges, early Cambrian, Lagerstätte, taphonomy, Murero, Spain,

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Abstract

The demosponge genus Crumillospongia, originally described from the Burgess Shale (middle Cambrian of Canada), has only been cited from lower and middle Cambrian localities of North America and China. The taxon is now also described from uppermost lower Cambrian rocks of the Murero Lagerstätte (Zaragoza Province, NE Spain). Crumillospongia mureroensis sp. nov. is a small to medium sized sack-shaped to elongate demosponge characterized by the presence of densely packed pores of three sizes, considerably larger than those in any other species of the genus. The Spanish material represents a link in the chronostratigraphical gap between the Chinese and North American material.

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