Poriferan paraphyly and its implications for Precambrian palaeobiology

@inproceedings{Sperling2007PoriferanPA,
  title={Poriferan paraphyly and its implications for Precambrian palaeobiology},
  author={Erik A. Sperling and Davide Pisani and Kevin J. Peterson},
  year={2007}
}
Abstract Well-supported molecular phylogenies, combined with knowledge of modern biology, can lead to new inferences about the sequence of character acquisition in early animal evolution, the taxonomic affinity of enigmatic Precambrian and Cambrian fossils, and the Proterozoic Earth system in general. In this paper we demonstrate, in accordance with previous molecular studies, that sponges are paraphyletic, and that calcisponges are more closely related to eumetazoans than they are to… 

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