ArticleNature communications2022
Neuroanatomy in a middle Cambrian mollisoniid and the ancestral nervous system organization of chelicerates.
Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Article
- New exceptionally preserved arthropod from the Furongian of Canada.BMC biology · 2026Article
- Article
- Early evolvability in arthropod tagmosis exemplified by a new radiodont from the Burgess Shale.Royal Society open science · 2025Article
- Preservation and early evolution of scalidophoran ventral nerve cord.Science advances · 2025Article
- Lower Ordovician synziphosurine reveals early euchelicerate diversity and evolution.Nature communications · 2024Article
- Article
- Cambrian lobopodians shed light on the origin of the tardigrade body plan.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- A mid-Cambrian tunicate and the deep origin of the ascidiacean body plan.Nature communications · 2023Article
- The sea spiderProceedings of the National Academy of Sciences of the United States of America · 2023Article
- Unparalleled details of soft tissues in a Cretaceous ant.BMC ecology and evolution · 2022Article
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4 authors.
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Abstract
Recent years have witnessed a steady increase in reports of fossilized nervous tissues among Cambrian total-group euarthropods, which allow reconstructing the early evolutionary history of these animals. Here, we describe the central nervous system of the stem-group chelicerate Mollisonia symmetrica from the mid-Cambrian Burgess Shale. The fossilized neurological anatomy of M. symmetrica includes optic nerves connected to a pair of lateral eyes, a putative condensed cephalic synganglion, and a metameric ventral nerve cord. Each trunk tergite is associated with a condensed ganglion bearing lateral segmental nerves, and linked by longitudinal connectives. The nervous system is preserved as reflective carbonaceous films underneath the phosphatized digestive tract. Our results suggest that M. symmetrica illustrates the ancestral organization of stem-group Chelicerata before the evolution of the derived neuroanatomical characters observed in Cambrian megacheirans and extant representatives. Our findings reveal a conflict between the phylogenetic signals provided by neuroanatomical and appendicular data, which we interpret as evidence of mosaic evolution in the chelicerate stem-lineage.
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