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Morphology and environment in the Jurassic Nucleatidae (Brachiopoda) from Western Tethys

2011; Wiley; Volume: 45; Issue: 2 Linguagem: Inglês

10.1111/j.1502-3931.2011.00270.x

1502-3931

Jorge Colás, Fernando García Joral,

Marine Biology and Ecology Research

LethaiaVolume 45, Issue 2 p. 178-190 Morphology and environment in the Jurassic Nucleatidae (Brachiopoda) from Western Tethys JORGE COLÁS, JORGE COLÁSSearch for more papers by this authorFERNANDO GARCÍA JORAL, FERNANDO GARCÍA JORALSearch for more papers by this author JORGE COLÁS, JORGE COLÁSSearch for more papers by this authorFERNANDO GARCÍA JORAL, FERNANDO GARCÍA JORALSearch for more papers by this author First published: 06 May 2011 https://doi.org/10.1111/j.1502-3931.2011.00270.xCitations: 4 Jorge Colás [[email protected]] Departamento de Ciencias de la Tierra (Paleontología) – IUCA, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain; Fernando García Joral [[email protected]] Departamento y UEI de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid e Instituto de Geología Económica, CSIC, José Antonio Novais 2, 28040 Madrid, Spain; manuscript received on 30/9/2010; manuscript accepted on 21/2/2011. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract Colás, J. & García Joral, F. 2011: Morphology and environment in the Jurassic Nucleatidae (Brachiopoda) from Western Tethys. Lethaia, Vol. 45, pp. 178–190. Nucleatidae (Brachiopoda, Terebratulida) are commonly considered as typical members of the Mediterranean assemblages during the Jurassic. However, nucleatids occasionally also occur in the margins of Western Tethys (Northwestern European shelf). Some of these occurrences in northeastern Spain are analysed, detecting a relation between nucleatid morphology and palaeoenvironment during the Jurassic. The validity of this relationship for the whole of the representatives of the group in the Western Tethys during the Jurassic is tested by means of morphofunctional analyses (principal components analysis and discriminant analysis), concluding that reduction of the lateral expansion of the shell is the key morphological feature whereby epioceanic and epicontinental taxa differ. This change can have functional significance because it can be interpreted as a mechanism to reduce the area exposed when the valves gape, increasing protection against harmful particles in environments characterized by higher terrigenous input. Some modifications on the systematics of the Nucleatidae at the genus level are proposed on the basis of the temporal and biogeographical distribution of these adaptations. □Brachiopods, Nucleatidae, functional morphology, adaptation, systematics, Jurassic, Spain. Citing Literature Volume45, Issue2April 2012Pages 178-190 RelatedInformation