RT Journal Article
T1 Upper Hauterivian nautiloids and associated invertebrate assemblage from the Barranco de la Muela section (southeastern Spain): Systematic, biostratigraphic and palaeoenvironmental implications
A1 Barroso Barcenilla, Fernando
A1 Berrocal Casero, Melani
A1 Callapez, Pedro Miguel
A1 Company Sempere, Miguel
A1 Pérez Valera, Fernando
A1 Pérez Valera, Juan Alberto
AB The lower part of the Lower Cretaceous Bolos Sandstone Formation as exposed in the Barranco de la Muela section (Sierra de la Muela Range, southeastern Spain) yields two species of ornamented nautiloids, Cymatoceras neocomiense and Eucymatoceras plicatum. These have been collected together with other cephalopods (ammonoids, belemnites) and different invertebrates (corals, brachiopods, bivalves, gastropods, echinoids). This fossil assemblage includes numerous large macroconchs of the ammonite Pseudothurmannia mortilleti, here considered as a senior synonym of P. catulloi, index species of the homonymous subzone of the upper Hauterivian “Pseudothurmannia ohmi” Zone. On this basis, the here reported findings constitute the first biostratigraphically well-constrained records of C. neocomiense and E. plicatum, namely in the Pseudothurmannia catulloi Subzone. The presence of these two ornamented and relatively depressed nautiloids in fine sandstone levels interbedded with sandy marls of the Bolos Formation, together with the palaeoecological characteristics of the associated fauna suggest a nearshore to inner-middle shelf, shallow to moderately deep palaeoenvironment with mixed siliciclastic-carbonate sedimentation, and high to moderate energy.
PB Elsevier
SN 0195-6671
YR 2022
FD 2022-02
LK https://hdl.handle.net/20.500.14352/72442
UL https://hdl.handle.net/20.500.14352/72442
LA eng
NO Ministerio de Economía y Competitividad
NO Centro de Investigação da Terra e do Espaço da Universidade de Coimbra
DS Docta Complutense
RD 14 dic 2025