NAGIOS: RODERIC FUNCIONANDO

Postcranial disparity of galeaspids and the evolution of swimming speeds in stem-gnathostomes

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Postcranial disparity of galeaspids and the evolution of swimming speeds in stem-gnathostomes

dc.contributor.author	Zhikun Gai, Z.
dc.contributor.author	Lin, X.
dc.contributor.author	Shan, X.
dc.contributor.author	Ferron, H.G.
dc.contributor.author	Donaghue, P.C.J.
dc.date.accessioned	2023-03-30T06:22:48Z
dc.date.available	2023-03-30T06:22:48Z
dc.date.issued	2023
dc.identifier.citation	Zhikun Gai, Z. Lin, X. Shan, X. Ferron, H.G. Donaghue, P.C.J. 2023 Postcranial disparity of galeaspids and the evolution of swimming speeds in stem-gnathostomes National Science Review 10 nwad050
dc.identifier.uri	https://hdl.handle.net/10550/85976
dc.description.abstract	Galeaspids are extinct jawless relatives of living jawed vertebrates whose contribution to understanding the evolutionary assembly of the gnathostome bodyplan has been limited by absence of postcranial remains. Here, we describe Foxaspis novemura gen. et sp. nov., based on complete articulated remains from a newly discovered Konservat-Lagerst¨atte in the Early Devonian (Pragian,∼410 Ma) of Guangxi, South China. F. novemura had a broad, circular dorso-ventrally compressed headshield, slender trunk and strongly asymmetrical hypochordal tail fin comprised of nine ray-like scale-covered digitations.This tail morphology contrasts with the symmetrical hypochordal tail fin of Tujiaaspis vividus, evidencing disparity in galeaspid postcranial anatomy. Analysis of swimming speed reveals galeaspids as moderately fast swimmers, capable of achieving greater cruising swimming speeds than their more derived jawless and jawed relatives. Our analyses reject the hypothesis of a driven trend towards increasingly active food acquisition which has been invoked to characterize early vertebrate evolution.
dc.language.iso	eng
dc.relation.ispartof	National Science Review, 2023, vol. 10, p. nwad050
dc.subject	Paleontologia
dc.subject	Evolució (Biologia)
dc.title	Postcranial disparity of galeaspids and the evolution of swimming speeds in stem-gnathostomes
dc.type	journal article	es_ES
dc.date.updated	2023-03-30T06:22:49Z
dc.identifier.doi	10.1093/nsr/nwad050
dc.identifier.idgrec	157212
dc.rights.accessRights	open access	es_ES