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As several recent studies have cast doubt on the validity of Deuterostomia as a clade (eg. [1]), I suggest that the latter be temporarily removed from the claimed chordate phylogeny, and that |parent=Deuterostomia be changed to |parent=Bilateria. Chaotic Enby (talk) 19:13, 1 October 2022 (UTC)Reply
The fact that Deuterostomia is shown as a superphylum doesn't really affect the argument much, as "clade" is a more generic term including these as well as other ranks. Nephrozoa is also contested, and the second sentence in that latter article mentions that both Nephorozoa and Deuterostomia are invalidated by some studies (see Xenambulacraria for another hypothesis).
Also, I meant "temporary" as in "we don't know for sure yet" - it is likely that the latest studies showing Deuterostomia as invalid will recieve more support as more studies are made on basal bilaterian phylogeny. However, it is also possible that future studies will in fact uphold Deuterostomia as a clade. In any case, the superphyla/clades Deuterostomia and Nephrozoa do not have anymore the scientific backing that they used to have, and claiming them as the definitive parents of Chordata would violate WP:NPOV in light of recent studies.
There is clearly some uncertainty over the validity of Deuterostoma, but it is still widely accepted and there is no agreement on the alternative topology and taxonomy. We cannot reflect the ongoing primary research in the taxobox. What we should follow is secondary sources and some form of consensus taxonomy. In my opinion, the most suitable for this is the consensus tree in Giribet & Edgecombe (2020)[1] (see my version of this tree at Giribet_&_Edgecombe_(2020), although I'm open to alternatives. Thus I would retain Deuterostoma in the taxobox and leave discussion of the alternative theories for the text of articles.
Oppose for now, but willing to amend. As u:Jts1882 points out, we should follow secondary sources, and not the primary research; and the secondary sources don't seem to yet accept dropping Deuterostomia. Are there any secondary sources that have dropped it? - UtherSRG(talk)14:44, 4 October 2022 (UTC)Reply