Universität zu Köln

Wintrich, Tanja, Scaal, Martin, Boehmer, Christine, Schellhorn, Rico, Kogan, Ilja ORCID: 0000-0002-4464-6722, van der Reest, Aaron and Sander, P. Martin (2020). Palaeontological evidence reveals convergent evolution of intervertebral joint types in amniotes. Sci Rep, 10 (1). LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wintrich, Tanja UNSPECIFIED UNSPECIFIED UNSPECIFIED Scaal, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Boehmer, Christine UNSPECIFIED UNSPECIFIED UNSPECIFIED Schellhorn, Rico UNSPECIFIED UNSPECIFIED UNSPECIFIED Kogan, Ilja UNSPECIFIED orcid.org/0000-0002-4464-6722 UNSPECIFIED van der Reest, Aaron UNSPECIFIED UNSPECIFIED UNSPECIFIED Sander, P. Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-322737
DOI:	10.1038/s41598-020-70751-2
Journal or Publication Title:	Sci Rep
Volume:	10
Number:	1
Date:	2020
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TRIASSIC STEM-TURTLE; PRESERVATION; PATHOLOGY; DINOSAUR; ORIGINS; DISC Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/32273