An armoured Cambrian lobopodian from China with arthropod-like appendages

@article{Liu2011AnAC,
  title={An armoured Cambrian lobopodian from China with arthropod-like appendages},
  author={Jianni Liu and Michael Steiner and Jason A Dunlop and Helmut Keupp and De-gan Shu and Qiang Ou and Jian Han and Zhifei Zhang and Xingliang Zhang},
  journal={Nature},
  year={2011},
  volume={470},
  pages={526-530}
}
Cambrian fossil Lagerstätten preserving soft-bodied organisms have contributed much towards our understanding of metazoan origins. Lobopodians are a particularly interesting group that diversified and flourished in the Cambrian seas. Resembling ‘worms with legs’, they have long attracted much attention in that they may have given rise to both Onychophora (velvet worms) and Tardigrada (water bears), as well as to arthropods in general. Here we describe Diania cactiformis gen. et sp. nov. as an… 
The morphology and phylogenetic position of the Cambrian lobopodian Diania cactiformis
TLDR
This study challenges the previous description of anteroposterior orientation, terminal claws and trunk tagmosis as expressed by differentiated anterior and posterior appendages in Cambrian lobopodians, and revisits the phylogeny of stem arthropods.
A Rare Onychophoran-Like Lobopodian from the Lower Cambrian Chengjiang Lagerstätte, Southwestern China, and its Phylogenetic Implications
TLDR
Antennacanthopodia gracilis new genus and species is described and interpreted here as an “unarmoured” lobopodian from the Chengjiang fossil Lagerstätte (Early Cambrian, ∼520 Ma), Yunnan, southwestern China, furthers the understanding of early lobopODian diversification.
The morphology and phylogenetic position of the Cambrian lobopodian Diania cactiformis
TLDR
New observations on D. cactiformis are made using newly collected material, rejecting the evidence for sclerotized, segmented and articulated appendages; instead the appendages compare more closely to lobopods.
Cambrian lobopodians and extant onychophorans provide new insights into early cephalization in Panarthropoda
TLDR
New material of the early Cambrian lobopodian Onychodictyon ferox from southern China is described, which reveals hitherto unknown head structures, including a proboscis with a terminal mouth, an anterior arcuate sclerite, a pair of ocellus-like eyes and branched, antenniform appendages associated with this ocular segment.
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
Cambrian suspension-feeding lobopodians and the early radiation of panarthropods
TLDR
A Bayesian approach to cladistics supports the view that a semi-sessile, suspension-feeding lifestyle characterized the origin and rise of Panarthropoda from cycloneuralian body plans.
A New Early Cambrian Lobopod-Bearing Animal (Murero, Spain) and the Problem of the Ecdysozoan Early Diversification
A new xenusian, Mureropodia apae gen. and sp. nov., is found in the lower Cambrian of the Murero Lagerstatte in the Cadenas Ibericas, NE Spain. In Mureropodia, the lobopod length/body width ratio
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