ArticleNature2017
Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China).
Article in Nature, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- The early CambrianProceedings. Biological sciences · 2024Article
- Early evolution of the ecdysozoan body plan.eLife · 2024Article
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- Heterochrony and parallel evolution of echinoderm, hemichordate and cephalochordate internal bars.Proceedings. Biological sciences · 2022Article
- Lack of support for Deuterostomia prompts reinterpretation of the first Bilateria.Science advances · 2021Article
- A Crab Is Not a Fish: Unique Aspects of the Crustacean Endocrine System and Considerations for Endocrine Toxicology.Frontiers in endocrinology · 2021Review
- Cuticular reticulation replicates the pattern of epidermal cells in lowermost Cambrian scalidophoran worms.Proceedings. Biological sciences · 2020Article
- Origin of ecdysis: fossil evidence from 535-million-year-old scalidophoran worms.Proceedings. Biological sciences · 2019Article
- Sedimentology and chemostratigraphy of the terminal Ediacaran Dengying Formation at the Gaojiashan section, South China.Geological magazine · 2019Article
- A stem group echinoderm from the basal Cambrian of China and the origins of Ambulacraria.Nature communications · 2019Article
- Trace fossils associated with Burgess Shale non-biomineralized carapaces: bringing taphonomic and ecological controls into focus.Royal Society open science · 2019Article
- Article
- Meat and Nicotinamide: A Causal Role in Human Evolution, History, and Demographics.International journal of tryptophan research : IJTR · 2017Review
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5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Deuterostomes include the group we belong to (vertebrates) as well as an array of disparate forms that include echinoderms, hemichordates and more problematic groups such as vetulicolians and vetulocystids. The Cambrian fossil record is well-populated with representative examples, but possible intermediates are controversial and the nature of the original deuterostome remains idealized. Here we report millimetric fossils, Saccorhytus coronarius nov. gen., nov. sp., from an Orsten-like Lagerstätte from the earliest Cambrian period of South China, which stratigraphically are amongst the earliest of deuterostomes. The bag-like body bears a prominent mouth and associated folds, and behind them up to four conical openings on either side of the body as well as possible sensory structures. An anus may have been absent, and correspondingly the lateral openings probably served to expel water and waste material. This new form has similarities to both the vetulicolians and vetulocystids and collectively these findings suggest that a key step in deuterostome evolution was the development of lateral openings that subsequently were co-opted as pharyngeal gills. Depending on its exact phylogenetic position, the meiofaunal habit of Saccorhytus may help to explain the major gap between divergence times seen in the fossil record and estimates based on molecular clocks.
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