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Palaeontological evidence reveals convergent evolution of intervertebral joint types in amniotes

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dc.contributor.author Wintrich T.
dc.contributor.author Scaal M.
dc.contributor.author Böhmer C.
dc.contributor.author Schellhorn R.
dc.contributor.author Kogan I.
dc.contributor.author van der Reest A.
dc.contributor.author Sander P.M.
dc.date.accessioned 2021-02-25T20:53:22Z
dc.date.available 2021-02-25T20:53:22Z
dc.date.issued 2020
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/162573
dc.description.abstract © 2020, The Author(s). The intervertebral disc (IVD) has long been considered unique to mammals. Palaeohistological sampling of 17 mostly extinct clades across the amniote tree revealed preservation of different intervertebral soft tissue types (cartilage, probable notochord) seen in extant reptiles. The distribution of the fossilised tissues allowed us to infer the soft part anatomy of the joint. Surprisingly, we also found evidence for an IVD in fossil reptiles, including non-avian dinosaurs, ichthyosaurs, plesiosaurs, and marine crocodiles. Based on the fossil dataset, we traced the evolution of the amniote intervertebral joint through ancestral character state reconstruction. The IVD evolved at least twice, in mammals and in extinct diapsid reptiles. From this reptilian IVD, extant reptile groups and some non-avian dinosaurs independently evolved a synovial ball-and-socket joint. The unique birds dorsal intervertebral joint evolved from this dinosaur joint. The tuatara and some geckos reverted to the ancestral persisting notochord.
dc.title Palaeontological evidence reveals convergent evolution of intervertebral joint types in amniotes
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 10
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS-2020-10-1-SID85089774229


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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