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
Cambrian lobopodians have attracted much attention in that they are considered to have close affinities with the origin of arthropods, and recent studies agree that they sample the stem-groups of
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: A review of recent progress in our understanding of their morphology and evolution
TLDR
The legs of Aysheaia pedunculata have a strong attachment with the body, like those of lobopodians in the Chengjiang Fauna, anditudinal wrinkles on the body of Xenusion auerswalde are regarded here as putative muscles.
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.
A Tube-Dwelling Early Cambrian Lobopodian
TLDR
Comprehensive phylogenetic analyses using parsimony, Bayesian inference, and maximum likelihood all support Facivermis as a luolishaniid in a derived position within the onychophoran stem group rather than as a basal panarthropod, and conclude that Faciver Mis provides a rare early Cambrian example of secondary loss to accommodate a highly specialized tube-dwelling lifestyle.
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 Carboniferous Non-Onychophoran Lobopodian Reveals Long-Term Survival of a Cambrian Morphotype
TLDR
The discovery of a Carboniferous long-legged lobopodian provides a more striking example of the long-term survival of Cambrian morphotypes than, for example, the occurrence of a Burgess Shale-type biota in the Ordovician of Morocco and dampens the effect of any major extinction of taxa at the end of the middle Cambrian.
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
A Cambrian unarmoured lobopodian, †Lenisambulatrix humboldti gen. et sp. nov., compared with new material of †Diania cactiformis
TLDR
The study augments the morphological diversity of Cambrian lobopodians and presents two evolutionary extremes of cuticular ornamentation: one represented by the Humboldt lobopODian, which was most likely entirely “naked”, the other epitomized by †D.
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