Universidad Complutense de Madrid
E-Prints Complutense

Crural bases position as a structural criterion for supraspecific diagnosis of Early Jurassic zeilleriid brachiopods

Impacto

Downloads

Downloads per month over past year

Baeza Carratalá, José F. and García Joral, Fernando (2013) Crural bases position as a structural criterion for supraspecific diagnosis of Early Jurassic zeilleriid brachiopods. Acta Palaeontologica Polonica, 59 (3). pp. 651-661. ISSN 0567-7920

[img]
Preview
PDF
Creative Commons Attribution.

1MB

Official URL: http://dx.doi.org/10.4202/app.2012.0068




Abstract

Analysis of the internal structure carried out on several representative genera of the brachiopod family Zeilleriidae from the Lower Jurassic of the Betic Ranges (SE Spain), complemented with specimens from nearby domains such as the Iberian Range and Lusitanian Basin, has enabled to propose a model for discrimination of genera based on the relative position of the crural bases with respect to the hinge plates. This particular feature has been analysed in the genera Zeilleria, Bakonyithyris, Securina, Neozeilleria, Cincta, Aulacothyris, and Plesiothyris, revealing three different basic patterns of crural bases arrangement: a Zeilleria-type, with crural bases distinctly arising from the ventral side of the hinge plates; a Securina-type, with crural bases originating transversally to the hinge plates and dorsally prominent; and a Bakonyithyris-type, intermediate between both previous patterns.


Item Type:Article
Uncontrolled Keywords:Brachiopoda, Zeilleriidae, Systematics, Brachidium Architecture, Jurassic, Western Tethys
Subjects:Sciences > Geology > Stratigraphic geology
Sciences > Geology > Paleontology
ID Code:43489
Deposited On:05 Jul 2017 08:25
Last Modified:11 Dec 2018 08:41

Origin of downloads

Repository Staff Only: item control page