RT Journal Article
T1 Morphology and environment in the Jurassic Nucleatidae(Brachiopoda) from Western Tethys
A1 Colás, Jorge
A1 García Joral, Fernando
AB 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.
PB Wiley
SN 0024-1164, ESSN: 1502-3931
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/42980
UL https://hdl.handle.net/20.500.14352/42980
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)
NO Ministerio de Ciencia e Innovación (MICINN)/Dirección General de Patrimonio Cultural de Aragón
NO Universidad Complutense de Madrid
NO Gobierno de Aragón
DS Docta Complutense
RD 24 abr 2025