NAGIOS: RODERIC FUNCIONANDO

Vascular structure of the earliest shark teeth

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/

Vascular structure of the earliest shark teeth

dc.contributor.author	Martínez Pérez, Carlos
dc.contributor.author	Martín-Lazaro, A.
dc.contributor.author	Ferrón, Humberto G.
dc.contributor.author	Kirstein, M.
dc.contributor.author	Donoghue, P.C.J.
dc.contributor.author	Botella Sevilla, Hector
dc.date.accessioned	2023-03-02T08:30:26Z
dc.date.available	2023-03-02T08:30:26Z
dc.date.issued	2018
dc.identifier.citation	Martínez-Pérez, C. Martín-Lazaro, A. Ferrón, H.G. Kirstein, M. Donoghue, P.C.J. Botella, H. 2018 Vascular structure of the earliest shark teeth Acta Geologica Polonica 68 3 457 465
dc.identifier.uri	https://hdl.handle.net/10550/85590
dc.description.abstract	Here we use synchrotron tomography to characterise dental vasculature in the oldest known tooth-bearing sharks, Leonodus carlsi Mader, 1986 and Celtiberina maderi Wang, 1993. Three dimensional reconstruction of the vascular system and microstructure of both taxa revealed a complex and dense network of canals, including horizontal, ascending and secondary bifurcated canals, as well as histological features consistent with an osteodont histotype. However, L. carlsi and C. maderi also exhibit significant morphological differences, showing Leonodus a typical diplodont tooth morphology with a linguo-labially elongated base, that contrast with Celtiberina's teeth that show a single conical cusp curved lingually with a week developed flat base mesio-distally extended, perhaps reflecting distant relationship. These data are compatible with a pre-Devonian diversification of the two main tooth types traditionally recognised in Palaeozoic sharks (i.e., 'cladodont' vs 'diplodont'). Finally, our data demonstrate that existing dental classification schemes based on styles of vascularisation are over-simplified, especially when Palaeozoic taxa are considered.
dc.language.iso	eng
dc.relation.ispartof	Acta Geologica Polonica, 2018, vol. 68, num. 3, p. 457-465
dc.subject	Biologia marina
dc.title	Vascular structure of the earliest shark teeth
dc.type	journal article	es_ES
dc.date.updated	2023-03-02T08:30:27Z
dc.identifier.idgrec	127962
dc.rights.accessRights	open access	es_ES