ArticleProceedings. Biological sciences2012
Cambrian bivalved arthropod reveals origin of arthrodization.
Article in Proceedings. Biological sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 99 citations in OpenAlex.
- Quantifying Evolutionary Dynamics of Arthropodization and Arthrodization.BioEssays : news and reviews in molecular, cellular and developmental biology · 2026Review
- Article
- A tiny Cambrian stem-mandibulate reveals independent evolution of limb tagmatization and specialization in early euarthropods.Scientific reports · 2025Article
- CAT-Posterior Mean Site Frequencies Improves Phylogenetic Modeling Under Maximum Likelihood and Resolves Tardigrada as the Sister of Arthropoda Plus Onychophora.Genome biology and evolution · 2025Article
- The CambrianProceedings. Biological sciences · 2024Article
- Unveiling the ventral morphology of a rare early Cambrian great appendage arthropod from the Chengjiang biota of China.BMC biology · 2024Article
- A network analysis of early arthropod evolution and the potential of the primitive.Scientific reports · 2024Article
- Large euarthropod carapaces from a high latitude Cambrian (Drumian) deposit in Spain.Royal Society open science · 2023Article
- Three-dimensional morphology of the biramous appendages inProceedings. Biological sciences · 2023Article
- The unbearable uncertainty of panarthropod relationships.Biology letters · 2023Article
- The problematic Cambrian arthropodRoyal Society open science · 2022Article
- Extreme multisegmentation in a giant bivalved arthropod from the Cambrian Burgess Shale.iScience · 2022Article
- The evolution of biramous appendages revealed by a carapace-bearing Cambrian arthropod.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- Correction to 'A possible case of inverted lifestyle in a new bivalved arthropod from the Burgess Shale'.Royal Society open science · 2020Article
- A possible case of inverted lifestyle in a new bivalved arthropod from the Burgess Shale.Royal Society open science · 2019Article
- Functional morphology of a lobopod: case study of an onychophoran leg.Royal Society open science · 2019Article
- Article
- Early Cambrian fuxianhuiids from China reveal origin of the gnathobasic protopodite in euarthropods.Nature communications · 2018Article
- The nervous and visual systems of onychophorans and tardigrades: learning about arthropod evolution from their closest relatives.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2017Review
- Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Extant arthropods are diverse and ubiquitous, forming a major constituent of most modern ecosystems. Evidence from early Palaeozoic Konservat Lagerstätten indicates that this has been the case since the Cambrian. Despite this, the details of arthropod origins remain obscure, although most hypotheses regard the first arthropods as benthic predators or scavengers such as the fuxianhuiids or megacheirans ('great-appendage' arthropods). Here, we describe a new arthropod from the Tulip Beds locality of the Burgess Shale Formation (Cambrian, series 3, stage 5) that possesses a weakly sclerotized thorax with filamentous appendages, encased in a bivalved carapace, and a strongly sclerotized, elongate abdomen and telson. A cladistic analysis resolved this taxon as the basal-most member of a paraphyletic grade of nekto-benthic forms with bivalved carapaces. This grade occurs at the base of Arthropoda (panarthropods with arthropodized trunk limbs) and suggests that arthrodization (sclerotization and jointing of the exoskeleton) evolved to facilitate swimming. Predatory and fully benthic habits evolved later in the euarthropod stem-lineage and are plesiomorphically retained in pycnogonids (sea spiders) and euchelicerates (horseshoe crabs and arachnids).
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