Phylogenomic analyses unravel annelid evolution

@article{Struck2011PhylogenomicAU,
  title={Phylogenomic analyses unravel annelid evolution},
  author={Torsten H. Struck and Christiane Paul and Natascha Hill and Stefanie Hartmann and Christoph H{\"o}sel and Michael Kube and Bernhard Lieb and Achim Meyer and Ralph Tiedemann and G{\"u}nter Purschke and Christoph Bleidorn},
  journal={Nature},
  year={2011},
  volume={471},
  pages={95-98}
}
Annelida, the ringed worms, is a highly diverse animal phylum that includes more than 15,000 described species and constitutes the dominant benthic macrofauna from the intertidal zone down to the deep sea. A robust annelid phylogeny would shape our understanding of animal body-plan evolution and shed light on the bilaterian ground pattern. Traditionally, Annelida has been split into two major groups: Clitellata (earthworms and leeches) and polychaetes (bristle worms), but recent evidence… 

Illuminating the base of the annelid tree using transcriptomics.

This study based on transcriptomic data comprising 68,750-170,497 amino acid sites from 305 to 622 proteins resolves annelid relationships, including Chaetopteridae, Amphinomidae, Sipuncula, Oweniidae, and Magelonidae in the basal part of the tree.

Phylogeny of Annelida

The phylogeny of Annelida was split into two major clades, one clade adapted to an errant mobile life and the other which includes earthworms and leeches, to a more sessile, sedentary one.

Current status of annelid phylogeny

The new annelids phylogeny highlights the variability and lability of annelid body plans, and many instances of simplifications of body plan as adaptations to new life styles can be found.

Phylogenomics resolves ambiguous relationships within Aciculata (Errantia, Annelida).

Articulating "Archiannelids": Phylogenomics and Annelid Relationships, with Emphasis on Meiofaunal Taxa.

A new Illumina-based data set is generated to address annelid relationships from a fresh perspective, independent from previously generated data and with nearly fully occupied matrices, and largely corroborate the phylogenomic results of Weigert et al. (2014).

The origin of annelids

A novel clade of machaeridians, the Cuniculepadida, is identified, which exhibit a series of adaptations for burrowing, and is identified as a convincing body of molecular evidence that polychaetes form a paraphyletic grade and that clitellates are derived polychaETes.

Recent progress in reconstructing lophotrochozoan (spiralian) phylogeny

New evidence supporting the inclusion of chaetognaths within gnathiferans, the phylogenetic position of Orthonectida and Dicyemida, as well as the general phylogeny of lophotrochozoans is reviewed.

FRONTIERS IN PALAEONTOLOGY THE ORIGIN OF ANNELIDS

A novel clade of machaeridians is identified, the Cuniculepadida, which exhibit a series of adaptations for burrowing, which is a convincing body of molecular evidence that polychaetes form a paraphyletic grade and that clitellates are derived polychae- tes.

The impact of fossil data on annelid phylogeny inferred from discrete morphological characters

A reinvestigation of the morphology of key fossil taxa is presented and analyses using probabilistic methods and both equal- and implied-weights parsimony recover paraphyletic polychaetes and support the conclusion that echiurans and clitellates are derived polychaETes.

Evolution of mitochondrial gene order in Annelida.

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