Abstract
The Aschelminthes is a collection of at least eight animal phyla, historically grouped together because the absence of a true body cavity was perceived as a pseudocoelom. Analyses of 18S rRNA sequences from six Aschelminth phyla (including four previously unpublished sequences) support polyphyly for the Aschelminthes. At least three distinct groups of Aschelminthes were detected: the Priapulida among the protostomes, the Rotifera-Acanthocephala as a sister group to the protostomes, and the Nematoda as a basal group to the triploblastic Eumetazoa.
Original language | English |
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Pages (from-to) | 1132-1137 |
Number of pages | 6 |
Journal | Molecular Biology and Evolution |
Volume | 12 |
Issue number | 6 |
DOIs | |
State | Published - Nov 1995 |
Keywords
- Acanthocephala/genetics
- Animal Population Groups/genetics
- Animals
- Biological Evolution
- Digestive System/anatomy & histology
- Evolution, Molecular
- Genes, Helminth
- Helminths/anatomy & histology
- Molecular Sequence Data
- Nematoda/genetics
- Phylogeny
- RNA, Helminth/genetics
- RNA, Ribosomal, 18S/genetics
- Rotifera/genetics
- Saccharomyces cerevisiae/genetics
- Sequence Alignment
- Sequence Homology, Nucleic Acid
- Species Specificity