ArticleNature2013
Chelicerate neural ground pattern in a Cambrian great appendage arthropod.
Article in Nature, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.
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Who cites it
55 citing papers in PubMed, 156 citations in OpenAlex.
- Article
- Article
- Pincer movement: fossil pushes origins of chelicerate arthropods back to the Cambrian period.Nature · 2026Article
- Cambrian Artiopoda Reveals a Constraint in Euarthropod Brain Evolution.bioRxiv : the preprint server for biology · 2026Article
- Brain anatomy of the Cambrian fossil Jianfengia multisegmentalis informs euarthropod phylogeny.Nature communications · 2025Article
- The first Silurian horseshoe crab reveals details of the xiphosuran ground plan.Proceedings. Biological sciences · 2025Article
- Early evolvability in arthropod tagmosis exemplified by a new radiodont from the Burgess Shale.Royal Society open science · 2025Article
- Pygmaclypeatus daziensis, a unique lower Cambrian arthropod with two different compound eye systems.Communications biology · 2025Article
- COScience advances · 2024Article
- Organ systems of a Cambrian euarthropod larva.Nature · 2024Article
- Unveiling the ventral morphology of a rare early Cambrian great appendage arthropod from the Chengjiang biota of China.BMC biology · 2024Article
- A Middle Ordovician Burgess Shale-type fauna from Castle Bank, Wales (UK).Nature ecology & evolution · 2023Article
- The median eyes of trilobites.Scientific reports · 2023Article
- Unparalleled details of soft tissues in a Cretaceous ant.BMC ecology and evolution · 2022Article
- Ordovician opabiniid-like animals and the role of the proboscis in euarthropod head evolution.Nature communications · 2022Article
- The Chengjiang Biota inhabited a deltaic environment.Nature communications · 2022Article
- The visual pathway in sea spiders (Pycnogonida) displays a simple serial layout with similarities to the median eye pathway in horseshoe crabs.BMC biology · 2022Article
- The remarkable visual system of a Cretaceous crab.iScience · 2022Article
- Neuroanatomy in a middle Cambrian mollisoniid and the ancestral nervous system organization of chelicerates.Nature communications · 2022Article
- Probability-based preservational variations within the early Cambrian Chengjiang biota (China).PeerJ · 2022Article
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Authors and funding
5 authors at 4 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Preservation of neural tissue in early Cambrian arthropods has recently been demonstrated, to a degree that segmental structures of the head can be associated with individual brain neuromeres. This association provides novel data for addressing long-standing controversies about the segmental identities of specialized head appendages in fossil taxa. Here we document neuroanatomy in the head and trunk of a 'great appendage' arthropod, Alalcomenaeus sp., from the Chengjiang biota, southwest China, providing the most complete neuroanatomical profile known from a Cambrian animal. Micro-computed tomography reveals a configuration of one optic neuropil separate from a protocerebrum contiguous with four head ganglia, succeeded by eight contiguous ganglia in an eleven-segment trunk. Arrangements of optic neuropils, the brain and ganglia correspond most closely to the nervous system of Chelicerata of all extant arthropods, supporting the assignment of 'great appendage' arthropods to the chelicerate total group. The position of the deutocerebral neuromere aligns with the insertion of the great appendage, indicating its deutocerebral innervation and corroborating a homology between the 'great appendage' and chelicera indicated by morphological similarities. Alalcomenaeus and Fuxianhuia protensa demonstrate that the two main configurations of the brain observed in modern arthropods, those of Chelicerata and Mandibulata, respectively, had evolved by the early Cambrian.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.