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Disporella guada sp. nov., an erect-ramose rectangulate cyclostome (Bryozoa, Stenolaemata) from the Carribean Sea: convergent evolution in bryozoan colony morphology
Taylor, Paul D Harmelin, Jean-Georges Bouchon, Claude
Taylor, Paul D
Harmelin, Jean-Georges
Bouchon, Claude
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2021-09-27
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2021-06-14
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Lichenoporidae
growth-form
taxonomy
molecular phylogeny
evolution
growth-form
taxonomy
molecular phylogeny
evolution
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The taxonomy of cyclostome bryozoans is founded on characters of the skeleton, but molecular sequence data have increasingly shown that established higher taxa are not monophyletic. Here we describe the skeletal morphology of a new species from Guadeloupe (French West Indies) with erect ramose colonies consisting of long, curved zooids that are typical of the suborder Cerioporina among living cyclostomes. However, molecular evidence from nuclear ribosomal RNA genes 18S and 28S places the new taxon in the suborder Rectangulata, where this colony-form has not been previously recorded. It nests firmly within the genus Disporella Gray, 1848, in a strongly supported clade that also includes Plagioecia patina (Lamarck, 1816) (Tubuliporina) and the sister taxa Doliocoitis cyanea Gordon & Taylor, 2001 (Rectangulata) and Favosipora rosea Gordon & Taylor, 2001 (Cerioporina). The short and robust branches of the new Guadeloupe cyclostome, here named Disporella guada Harmelin, Taylor & Waeschenbach sp. nov., are well adapted to life in shallow rocky sites exposed to severe wave action, which appear to be its exclusive habitat.
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Taylor, P. D., Harmelin, J.-G., Waeschenbach, A., & Bouchon, C. (2021). Disporella guada sp. nov., an erect-ramose rectangulate cyclostome (Bryozoa, Stenolaemata) from the Caribbean Sea: convergent evolution in bryozoan colony morphology. European Journal of Taxonomy, 773(1), 1–18. https://doi.org/10.5852/ejt.2021.773.1507
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Copyright (c) 2021 Paul D. Taylor, Jean-Georges Harmelin, Andrea Waeschenbach, Claude Bouchon. Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License. The attached file is the published version of the article.
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2118-9773
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openAccess