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15/01/2019
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2019-03-27
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phylogenomic methods
Xenoturbella
clades
Molecular data
Xenoturbella
clades
Molecular data
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Abstract
Refinements in phylogenomic methods and novel data have clarified several
controversies in animal phylogeny that were intractable with traditional PCR-based
approaches or early Next Gen analyses. An alliance between Placozoa and Cnidaria has
recently found support. Data from newly discovered species of Xenoturbella contribute
to Xenacoelomorpha being placed as sister group of Nephrozoa rather than within the
deuterostomes. Molecular data reinforce the monophyly of Gnathifera and ally the longenigmatic chaetognaths with them. Platyzoa was an artefactual grouping, and deep
relationships within Spiralia now depict Rouphozoa (= Gastrotricha + Platyhelminthes)
as sister group to Lophotrochozoa, and Gnathifera (plus Chaetognatha) their immediate
sister group. A “divide and conquer” strategy of subsampling clades to optimize gene
selection may be needed to simultaneously resolve the many disparate clades of the
animal tree of life
Citation
Giribet, G. & Edgecombe, G.D. ‘“Perspectives in Animal Phylogeny and Evolution”: A decade later’, p167-178. in: Fusco, G. 'Perspectives on Evolutionary and Developmental Biology Essays for Alessandro Minelli'. Padova University Press, 2019. ISBN 978-88-6938-140-9
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First edition 2019, Padova University Press © 2019 Padova University Press, Università degli Studi di Padova via 8 Febbraio 2, Padova This item is freely available.
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978-88-6938-140-9