Phylogenetic position of Diania challenged

@article{Mounce2011PhylogeneticPO,
  title={Phylogenetic position of Diania challenged},
  author={R. Mounce and Matthew Albion Wills},
  journal={Nature},
  year={2011},
  volume={476},
  pages={E1-E1}
}
Arising from J. Liu et al. 470, 526–530 (2011)10.1038/nature09704; Liu et al. replyLiu et al. describe a new and remarkable fossil, Diania cactiformis. This animal apparently combined the soft trunk of lobopodians (a group including the extant velvet worms in addition to many Palaeozoic genera) with the jointed limbs that typify arthropods. They go on to promote Diania as the immediate sister group to the arthropods, and conjecture that sclerotized and jointed limbs may therefore have evolved… 
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Cambrian lobopodians: A review of recent progress in our understanding of their morphology and evolution

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Decay of velvet worms (Onychophora), and bias in the fossil record of lobopodians

It is hypothesized that stemward slippage is unlikely to be a significant factor among the taphonomic biases that have affected organisms where decay-resistant features of the anatomy are rich in phylogenetically informative characters, and organisms which possess decay- resistant body parts but have informative characters concentrated in decay-prone tissues will be just as liable to bias as those that lack decay- resisting body parts.

Worm-lobopodian assemblages from the Early Cambrian Chengjiang biota: Insight into the “pre-arthropodan ecology”?

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This study samples at the species level and includes numerous fossils and some extant forms described in the last fifteen years of Priapulids, among the first groups used to test hypotheses concerning the morphological disparity of Cambrian fossils relative to the extant fauna.

Pandora’s Pithos

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The evolution of biramous appendages revealed by a carapace-bearing Cambrian arthropod

Biramous appendages are a common feature among modern marine arthropods that evolved deep in arthropod phylogeny. The branched appendage of Cambrian arthropods has long been considered as the ancient…

The Collins’ monster, a spinous suspension‐feeding lobopodian from the Cambrian Burgess Shale of British Columbia

Collinsovermis, plus Collinsium and Acinocricus, are found to comprise a sub‐group of stout luolishaniid lobopodians with remarkably long spinules on the front lobopods, interpreted here as a clade, distinct from both the comparatively slenderer Luolishania and a sub-group composed of Facivermis and Ovatiovermis lacking body sclerites.

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