Proposed clade of animals
Nephrozoa is a proposed major clade of bilaterian animals . It includes all bilaterians other than Xenacoelomorpha . It contrasts with the Xenambulacraria hypothesis, which instead posits that Xenacoelomorpha is most closely related to Ambulacraria .[ 1] [ 2] [ 3] [ 4] [ 5] Which hypothesis is correct is controversial. Authors supporting the Xenambulacraria hypothesis have suggested that the genetic evidence used to support Nephrozoa may be due to systematic error.[ 1]
Below is a proposed phylogenetic tree of Nephrozoa:
^ a b 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. 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. 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. 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 . ISSN 2375-2548 . 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. doi :10.1016/j.cub.2018.11.042 . PMID 30639106 .