Nephrozoa is a proposed major clade of bilaterian animals. Under this hypothesis, Xenacoelomorpha forms the earliest diverging branch of Bilateria, with all other bilaterians placed in Nephrozoa. It contrasts with the Xenambulacraria hypothesis, which instead posits that Xenacoelomorpha is most closely related to Ambulacraria (usually placed as deuterostomes).[1][2][3][4][5][6] Which hypothesis is correct has been debated, and as of 2024 the issue is unresolved.[7][8]
| Nephrozoa | |
|---|---|
 | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| Clade: | ParaHoxozoa |
| Clade: | Bilateria |
| Clade: | Nephrozoa Jondelius et al., 2002 |
| Subdivisions | |
| Synonyms | |
|
Eubilateria Ax, 1987 | |
Below is a proposed phylogenetic tree of Nephrozoa:
| Bilateria |
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References
edit- ^ Philippe, Hervé; Poustka, Albert J.; Chiodin, Marta; Hoff, Katharina J.; Dessimoz, Christophe; Tomiczek, Bartlomiej; Schiffer, Philipp H.; et al. (2019). "Mitigating Anticipated Effects of Systematic Errors Supports Sister-Group Relationship between Xenacoelomorpha and Ambulacraria". Current Biology. 29 (11): 1818–1826.e6. Bibcode:2019CBio...29E1818P. doi:10.1016/j.cub.2019.04.009. hdl:21.11116/0000-0004-DC4B-1. ISSN 0960-9822. PMID 31104936. S2CID 155104811.
- ^ Marlétaz, Ferdinand (2019-06-17). "Zoology: Worming into the Origin of Bilaterians". Current Biology. 29 (12): R577 – R579. Bibcode:2019CBio...29.R577M. doi:10.1016/j.cub.2019.05.006. ISSN 0960-9822. PMID 31211978.
- ^ Kapli, Paschalia; Telford, Maximilian J. (11 Dec 2020). "Topology-dependent asymmetry in systematic errors affects phylogenetic placement of Ctenophora and Xenacoelomorpha". Science Advances. 6 (10): eabc5162. Bibcode:2020SciA....6.5162K. doi:10.1126/sciadv.abc5162. PMC 7732190. PMID 33310849.
- ^ Kapli, Paschalia; Natsidis, Paschalis; Leite, Daniel J.; Fursman, Maximilian; Jeffrie, Nadia; Rahman, Imran A.; Philippe, Hervé; Copley, Richard R.; Telford, Maximilian J. (2021-03-19). "Lack of support for Deuterostomia prompts reinterpretation of the first Bilateria". Science Advances. 7 (12): eabe2741. Bibcode:2021SciA....7.2741K. doi:10.1126/sciadv.abe2741. PMC 7978419. PMID 33741592.
- ^ Marlétaz, Ferdinand; Peijnenburg, Katja T.C.A.; Goto, Taichiro; Satoh, Noriyuki; Rokhsar, Daniel S. (2019-01-21). "A New Spiralian Phylogeny Places the Enigmatic Arrow Worms among Gnathiferans". Current Biology. 29 (2): 312–318.e3. Bibcode:2019CBio...29E.312M. doi:10.1016/j.cub.2018.11.042. PMID 30639106.
- ^ Schiffer, Philipp H; Natsidis, Paschalis; Leite, Daniel J; Robertson, Helen E; Lapraz, François; Marlétaz, Ferdinand; Fromm, Bastian; Baudry, Liam; Simpson, Fraser; Høye, Eirik; Zakrzewski, Anne C; Kapli, Paschalia; Hoff, Katharina J; Müller, Steven; Marbouty, Martial (2024-08-07). "Insights into early animal evolution from the genome of the xenacoelomorph worm Xenoturbella bocki". eLife. 13. doi:10.7554/eLife.94948. ISSN 2050-084X. PMC 11521371. PMID 39109482.
- ^ Abalde, Samuel; Jondelius, Ulf (2025-02-10). Whelan, Nathan (ed.). "A Phylogenomic Backbone for Acoelomorpha Inferred From Transcriptomic Data". Systematic Biology. 74 (1): 70–85. doi:10.1093/sysbio/syae057. ISSN 1063-5157. PMC 11809588. PMID 39451056.
- ^ Robertson, Helen E.; Sebé-Pedrós, Arnau; Saudemont, Baptiste; Loe-Mie, Yann; Zakrzewski, Anne-C.; Grau-Bové, Xavier; Mailhe, Marie-Pierre; Schiffer, Philipp; Telford, Maximilian J.; Marlow, Heather (2024-03-19). "Single cell atlas of Xenoturbella bocki highlights limited cell-type complexity". Nature Communications. 15 (1): 2469. Bibcode:2024NatCo..15.2469R. doi:10.1038/s41467-024-45956-y. ISSN 2041-1723. PMC 10951248. PMID 38503762.
Further reading
edit- Balavoine, G. (17 April 1998). "EVOLUTION: One or Three Cambrian Radiations?". Science. 280 (5362): 397–398. doi:10.1126/science.280.5362.397. ISSN 0036-8075. S2CID 84468701.
- Bourlat, S; Nielsen, C; Economou, A; Telford, M (October 2008). "Testing the new animal phylogeny: A phylum level molecular analysis of the animal kingdom". Molecular Phylogenetics and Evolution. 49 (1): 23–31. Bibcode:2008MolPE..49...23B. doi:10.1016/j.ympev.2008.07.008. ISSN 1055-7903. PMID 18692145.
- Jondelius, Ulf; Ruiz-Trillo, Inaki; Baguna, Jaume; Riutort, Marta (April 2002). "The Nemertodermatida are basal bilaterians and not members of the Platyhelminthes". Zoologica Scripta. 31 (2): 201–215. doi:10.1046/j.1463-6409.2002.00090.x. ISSN 0300-3256. S2CID 84015834.
External links
edit
Data related to Nephrozoa at Wikispecies
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