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The demosponge Leptomitus cf. L. lineatus, first occurrence from the Middle Cambrian of Spain (Murero Formation, Western Iberian Chain)

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García-Bellido Capdevila, Diego (2003) The demosponge Leptomitus cf. L. lineatus, first occurrence from the Middle Cambrian of Spain (Murero Formation, Western Iberian Chain). Geologica acta, 1 (1). pp. 113-119. ISSN 1695-6133

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Official URL: http://www.geologica-acta.com/MostrarAbstractAC.do?abstract=gav0101a11



Abstract

The Middle Cambrian Murero Formation in the Iberian Chain (NE Spain) has yielded a small collection of softbodied fossils (palaeoscolecid worms, onychophorans, algae), a host of fossils from organisms with mineralized skeletons such as trilobites and brachiopods, and some trace fossils. This paper deals with the description of the only specimen of the demosponge Leptomitus known so far from Spain and its association with the brachiopod Micromitra, showing a probable case of commensalism by the latter over the former. The taphonomical study indicates that there was little or no disarticulation of the sponge spicules and suggests that a rather complex series of alteration processes has occurred since these organisms were buried.


Item Type:Article
Uncontrolled Keywords:Porifera, Burgess Shale-type biota, Commensalism, Taphonomy, Caesaraugustian Stage
Subjects:Sciences > Geology > Paleontology
ID Code:36072
Deposited On:02 Mar 2016 09:44
Last Modified:11 Dec 2018 08:42

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