Sanctacaris uncata: the oldest chelicerate (Arthropoda)

@article{Legg2014SanctacarisUT,
  title={Sanctacaris uncata: the oldest chelicerate (Arthropoda)},
  author={David A. Legg},
  journal={Naturwissenschaften},
  year={2014},
  volume={101},
  pages={1065-1073}
}
The morphology of the arthropod Sanctacaris uncata, from the Middle Cambrian Burgess Shale of Canada, is reinterpreted based on a restudy of previously described material. Although originally considered a chelicerate-like arthropod, these affinities were dismissed based primarily on interpretations of the anterior appendages and hypotheses which considered the megacheirans (‘great-appendage’ arthropods) as putative ancestors of chelicerates. The similarities between megacheirans and… 
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