| Literature DB >> 7659019 |
B Winnepenninckx1, T Backeljau, R De Wachter.
Abstract
The phylogenetic relationships of protostome worms were studied by comparing new complete 18S rRNA sequences of Vestimentifera, Pogonophora, Sipuncula, Echiura, Nemertea, and Annelida with existing 18S rRNA sequences of Mollusca, Arthropoda, Chordata, and Platyhelminthes. Phylogenetic trees were inferred via neighbor-joining and maximum parsimony analyses. These suggest that (1) Sipuncula and Echiura are not sister groups; (2) Nemertea are protostomes; (3) Vestimentifera and Pogonophora are protostomes that have a common ancestor with Echiura; and (4) Vestimentifera and Pogonophora are a monophyletic clade.Mesh：
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Year: 1995 PMID： 7659019 DOI： 10.1093/oxfordjournals.molbev.a040243
Source DB: PubMed Journal: Mol Biol Evol ISSN： 0737-4038 Impact factor: 16.240