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A reevaluation of the evidence supporting an unorthodox hypothesis on the origin of extant amphibians Naturalis
Marjanovic, D.; Laurin, M..
The origin of frogs, salamanders and caecilians is controversial. McGowan published an original hypothesis on lissamphibian origins in 2002 (McGowan, 2002, Zoological Journal of the Linnean Society, 135: 1-32), stating that Gymnophiona was nested inside the 'microsaurian' lepospondyls, this clade was the sister-group of a caudate-salientian-albanerpetontid clade, and both were nested inside the dissorophoid temnospondyls. We have investigated McGowan's data matrix and isagree with the scoring of 35% of the cells. All taxa and all but two characters are affected. In some cases, we have a different interpretation about correspondence between morphology and character states, or we delimit states differently (or use information that was unknown in 2002). In...
Tipo: Article / Letter to the editor Palavras-chave: Albanerpetontidae; Brachydectes; Coding; Continuous characters; Data matrix; Gerobatrachus; Gymnophioniformes; Gymnophionomorpha; Lissamphibia; Lysorophia; Morphology; Ontogeny; Paleontology; Phylogeny; Scoring; Stepmatrix gap-weighting; 42.82.
Ano: 2008 URL:
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