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Illusioluidia teneryi n. gen. and sp. (Asteroidea: Echinodermata) from the Pennsylvanian of Texas, and its homeomorphy with the extant genus Luidia Forbes

Published online by Cambridge University Press:  19 May 2016

Daniel B. Blake  and
Thomas E. Guensburg
Daniel B. Blake
Affiliation:
Department of Geology, University of Illinois, Urbana 61801
Thomas E. Guensburg
Affiliation:
Department of Geography and Earth Science, Southern Illinois University, Edwardsville 62026
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Abstract

Illusioluidia teneryi is a new genus and species of asteroid echinoderm described from the Missourian (Upper Pennsylvanian) Wolf Mountain Shale of Texas. Illusioluidia is important because it is strongly homeomorphic with modern Luidia; Luidia has been considered primitive among living asteroids by some authors. Illusioluidia, however, is not ancestral to Luidia or any other modern genus; similarities are convergent. Luidia is a predator, largely on active invertebrates (other echinoderms, mollusks), whereas Illusioluidia is inferred to have been a small-particle feeder. Homeomorphy reflects neither descent nor feeding habits; environmental controls are suggested.

Type
Research Article
Information
Journal of Paleontology , Volume 63 , Issue 5 , September 1989 , pp. 662 - 668
Copyright
Copyright © The Paleontological Society 

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