Mitochondrial genome data support the basal position of Acoelomorpha and the polyphyly of the Platyhelminthes.

@article{RuizTrillo2004MitochondrialGD,
  title={Mitochondrial genome data support the basal position of Acoelomorpha and the polyphyly of the Platyhelminthes.},
  author={I{\~n}aki Ruiz-Trillo and Marta Riutort and H. Matthew Fourcade and Jaume Bagu{\~n}{\'a} and Jeffrey L. Boore},
  journal={Molecular phylogenetics and evolution},
  year={2004},
  volume={33 2},
  pages={
          321-32
        }
}

Platyzoan mitochondrial genomes.

Phylogenetic distribution of microRNAs supports the basal position of acoel flatworms and the polyphyly of Platyhelminthes

The limited set of miRNAs found in acoels, intermediate between the even more reduced set in cnidarians and the larger and expanding set in the rest of bilaterians, is compelling evidence for the basal position of acoel flatworms and the polyphyly of Platyhelminthes.

The phylogenetic position of Acoela as revealed by the complete mitochondrial genome of Symsagittifera roscoffensis

The phylogenetic analysis supports the view that acoels and nemertodermatids are the earliest divergent extant lineage of Bilateria and remain a valid source for seeking primitive characters present in the last common ancestor of Bilatersia.

The Complete Mitochondrial Genome of Dugesia japonica (Platyhelminthes; Order Tricladida)

This is the first complete sequence analysis of the mitochondrial genome of a free-living member of Rhabditophora, which will facilitate further studies on the population genetics and genomic evolution of the Platyhelminthes.

The mitochondrial DNA of Xenoturbella bocki: genomic architecture and phylogenetic analysis

A second complete mitochondrial genome of this species is sequenced and phylogenetic analyses based on the amino acid sequences of all 13 mitochondrial protein-coding genes and on its gene order confirm the deuterostome relationship of Xenoturbella.

Molecular phylogeny of the Platyhelminthes

Phylum-wide analyses based on complete ribosomal and other nuclear genes addressed to answer the main issues facing systematics and phylogeny of Platyhelminthes are reviewed.

Bilaterian phylogeny: a broad sampling of 13 nuclear genes provides a new Lophotrochozoa phylogeny and supports a paraphyletic basal acoelomorpha.

A new phylogeny not only agrees with most classical molecular results but also provides new insights into the relationships between lophotrochozoans and challenges the results obtained using high-throughput strategies, highlighting the problems associated with the current trend to increase gene number rather than taxa.

Lophotrochozoan mitochondrial genomes.

What is known about mitochondrial genomes of the lophotrochozoans and how comparisons of some of these features may be useful in discerning the phylogeny of this group are reviewed.
...

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