dc.contributor.author | Chen, H | |
dc.contributor.author | Parry, LA | |
dc.contributor.author | Vinther, J | |
dc.contributor.author | Zhai, D | |
dc.contributor.author | Hou, X | |
dc.contributor.author | Ma, X | |
dc.date.accessioned | 2021-01-19T09:04:51Z | |
dc.date.issued | 2020-06-11 | |
dc.description.abstract | The phylum of annelids is one of the most disparate animal phyla and encompasses ambush predators, suspension feeders and terrestrial earthworms1. The early evolution of annelids remains obscure or controversial2,3, partly owing to discordance between molecular phylogenies and fossils2,4. Annelid fossils from the Cambrian period have morphologies that indicate epibenthic lifestyles, whereas phylogenomics recovers sessile, infaunal and tubicolous taxa as an early diverging grade5. Magelonidae and Oweniidae (Palaeoannelida1) are the sister group of all other annelids but contrast with Cambrian taxa in both lifestyle and gross morphology2,6. Here we describe a new fossil polychaete (bristle worm) from the early Cambrian Canglangpu formation7 that we name Dannychaeta tucolus, which is preserved within delicate, dwelling tubes that were originally organic. The head has a well-defined spade-shaped prostomium with elongated ventrolateral palps. The body has a wide, stout thorax and elongated abdomen with biramous parapodia with parapodial lamellae. This character combination is shared with extant Magelonidae, and phylogenetic analyses recover Dannychaeta within Palaeoannelida. To our knowledge, Dannychaeta is the oldest polychaete that unambiguously belongs to crown annelids, providing a constraint on the tempo of annelid evolution and revealing unrecognized ecological and morphological diversity in ancient annelids. | en_GB |
dc.description.sponsorship | NSFC | en_GB |
dc.description.sponsorship | Yunnan Provincial grant | en_GB |
dc.description.sponsorship | YIBS Donolley Postdoctoral Fellowship | en_GB |
dc.description.sponsorship | Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences | en_GB |
dc.description.sponsorship | Natural Environment Research Council (NERC) | en_GB |
dc.identifier.citation | Vol. 583, pp. 249 - 252 | en_GB |
dc.identifier.doi | 10.1038/s41586-020-2384-8 | |
dc.identifier.grantnumber | 41861134032 | en_GB |
dc.identifier.grantnumber | 2015HA021 | en_GB |
dc.identifier.grantnumber | 2019DG050 | en_GB |
dc.identifier.grantnumber | 2015HC029 | en_GB |
dc.identifier.grantnumber | 2018IA073 | en_GB |
dc.identifier.grantnumber | IGGCAS-201905 | en_GB |
dc.identifier.grantnumber | NE/L011751/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/124428 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Research | en_GB |
dc.rights | © The Author(s), under exclusive licence to Springer Nature Limited 2020 | en_GB |
dc.title | A Cambrian crown annelid reconciles phylogenomics and the fossil record | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2021-01-19T09:04:51Z | |
dc.identifier.issn | 0028-0836 | |
dc.description | This is the author accepted manuscript. The final version is available from Nature Research via the DOI in this record | en_GB |
dc.description | Data availability:
All data analysed in this paper are available as part of the Article, Extended Data Figs. 1–8 or Supplementary Information. The nomenclatural acts in this publication have been registered at ZooBank (LSID: urn:lsid:zoobank.org:pub:5BC89E47-2955-4539-94FD-D400E8C947FB). | en_GB |
dc.description | Code availability:
The phylogenetic dataset, and the commands and topological constraints necessary to run the MrBayes analyses, are included as NEXUS formatted files in the Supplementary Information. | en_GB |
dc.identifier.journal | Nature | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2020-03-26 | |
exeter.funder | ::Natural Environment Research Council (NERC) | en_GB |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2020-06-11 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2021-01-19T09:00:23Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2021-01-19T09:04:56Z | |
refterms.panel | A | en_GB |