Talk:Notochord

Anatomy: Embryology High‑importance

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Animal anatomy High‑importance

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Wiki Education Foundation-supported course assignment

This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Megamanhuy.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 05:26, 17 January 2022 (UTC)[reply]

organisms with a notochord

This section is silly--all Chordate phyla contain a notochord at some point in their development. 137.54.11.128 (talk) 15:56, 2 March 2010 (UTC)[reply]

News flash - the notochord isn't just a transient developmental structure. For millions of years, it was the central support of all chordates, and several modern vertebrates have *reverted* to having "just" a notochord. Ill-informed opinions like yours are why paleontology and comparative anatomy should be required courses. Mokele (talk) 16:58, 2 March 2010 (UTC)[reply]

I would be very grateful if someone would kindly explain the notochord in the Coelacanth. —Preceding unsigned comment added by 78.148.37.143 (talk) 22:47, 18 April 2011 (UTC)[reply]

Ontogeny does not recapitulate phylogeny

This is a discredited doctrine and ought not be implied in the lede, particularly as that particular statement is unreferenced. See Recapitulation theory. 74.220.76.54 (talk) 20:20, 30 November 2011 (UTC)[reply]

Ontogeny does indeed recapulate phylogeny. It just doesn't do so consistently or completely. Stephen Jay Gould explains this in his book Ontogeny and Phylogeny. By the way, someone should mention early tetrapods such as Acanthostega. They had notochords as adults. Zyxwv99 (talk) 18:58, 11 July 2015 (UTC)[reply]

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Some suggestions to improve the article

References 8 and 9 need to be changed, because the link to the website associated with them wasn't found (i.e. out of date). We suggest possibly taking these references out of the article and replacing them with either, or both of these newer sources: 1) Lauri, A., Brunet, T., Handberg-Thorsager, M., Fischer, A.H., Simakov, O., Steinmetz, P.R., Tomer, R., Keller, P.J. and Arendt, D. 2014. Development of the annelid axochord: insights into notochord evolution. Science, 345: 1365-1368. 2) Cameron, C.B., Garey, J.R. and Swalla, B.J. 2000. Evolution of the chordate body plan: new insights from phylogenetic analyses of deuterostome phyla. Proceedings of the National Academy of Sciences, 97: 4469-4474. In addition, the "Developmental" section of the article is relatively short and the paragraphs need to be related to one another in a better way. For example, the first paragraph talks about humans and chordates but does not go into detail about the actual developmental processes. In contrast, the second paragraph vaguely mentions the yolk sac, however, this section was not correctly written and was not cited. Finally, more pictures of the notochord are needed and the pictures used in this section need to be updated.Nordliam (talk) 18:14, 17 February 2017 (UTC)[reply]

Wiki Education assignment: Developmental and Molecular Biology Spring 2024

This article is currently the subject of a Wiki Education Foundation-supported course assignment, between 8 January 2024 and 24 April 2024. Further details are available on the course page. Student editor(s): Ariannapetrovia (article contribs).

— Assignment last updated by Ariannapetrovia (talk) 16:58, 23 February 2024 (UTC)[reply]