Evidence for a clade of nematodes, arthropods and other moulting animals

@article{Aguinaldo1997EvidenceFA,
  title={Evidence for a clade of nematodes, arthropods and other moulting animals},
  author={Anna Marie A. Aguinaldo and James M. Turbeville and Lawrence S. Linford and Maria C. Rivera and James R. Garey and Rudolf A. Raff and James Alan Lake},
  journal={Nature},
  year={1997},
  volume={387},
  pages={489-493}
}
The arthropods constitute the most diverse animal group, but, despite their rich fossil record and a century of study, their phylogenetic relationships remain unclear1. Taxa previously proposed to be sister groups to the arthropods include Annelida, Onychophora, Tardigrada and others, but hypotheses of phylogenetic relationships have been conflicting2,3. For example, onychophorans, like arthropods, moult periodically, have an arthropod arrangement of haemocoel1,4, and have been related to… Expand
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Ecdysozoan Mitogenomics: Evidence for a Common Origin of the Legged Invertebrates, the Panarthropoda
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The study confirms the monophyly of the legged ecdysozoans, shows that past support for a Tardigrada + Nematoda group was due to long-branch attraction, and suggests that the velvet worms are the sister group to the arthropods. Expand
The Articulata hypothesis – or what is a segment?
TLDR
Based on numerous similarities not shared with other bilaterian taxa it is suggested that segmentation of annelids and arthropods is homologous and apomorphic for a monophyletic Articulata. Expand
Coelomata and not Ecdysozoa: evidence from genome-wide phylogenetic analysis.
TLDR
A phylogenetic analysis of over 500 sets of orthologous proteins, which are represented in plants, animals, and fungi, using maximum likelihood, maximum parsimony, and distance methods showed concordance between evolution of protein sequences and higher-level evolutionary events, such as domain fusion or gene loss. Expand
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Tardigrades constitute a phylum of miniaturized metazoans with ca. 1030 living species, a fossil record that probably dates back to the Cambrian, and physiological properties that allow them to live… Expand
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TLDR
The goal of this paper was to investigate the position of the Arthropoda within the protostome animals and determine arthropod sister-group relationships, and the phylogenetic conclusions were summarized as monophyletic. Expand
The position of the Arthropoda in the phylogenetic system
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There are morphological characters that support Articulata, but molecular as well as morphological data advocate Ecdysozoa, and comparative morphology suggests Gastrotricha as the sister group of Ecdy sozoa with the synapomorphies. Expand
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