TY  - JOUR
A1  - Vicedo, Vicent
A1  - Frijia, Gianluca
A1  - Parente, Mariano
A1  - Caus, Esmeralda
T1  - The late creataceous genera cuvillierinella, cyclopseudedomia, andrhapydionina (Rhapydioninidae, Foraminiferida) in shallow-watercarbonates of pylos (Peloponnese, Greece)
JF  - Journal of foraminiferal research
N2  - Shell architectures of the larger foraminiferal genera cyclopseudedomia, and Rhapydionina were studied by comparing topotypes of previously described species with new specimens retrieved from Late Cretaceous shallow-water carbonates of Pylos (Peloponnese, Greece), where the three genera are found in association. The megalospheric generation of each genus exhibits a distinctive shell shape in adult specimens (i.e., fan-shaped in Cyclopseudedomia, conical in Rhapydionina, and cylindrical in Cuvillierinella). Although their microspheric adults are similarly thin, flat, and discoidal, they can be identified at the genus level by means of a detailed structural analysis. Cavillierinella shows the septula to be interrupted by a large preseptal space, while Cyclopseudedomia and Rhapydionina exhibit continuous, non-interrupted septula. In addition, Cyclopseudedomia presents only one row of medullar chamberlets, whereas Rhapydionina shows numerous medullar chamberlets distributed in a thick basal layer.
 Two new species, Cuvillierinella pylosensis and Rhapydionina fleuryi, are described. The former is a more complex taxon than the type species, C salentina, while the latter corresponds to a more primitive species, R. liburnica. Strontium-isotope stratigraphy indicates an uppermost Campanian-lowermost Maastrichtian age for these new species.
Y1  - 2011
SN  - 0096-1191
VL  - 41
IS  - 2
SP  - 167
EP  - 181
PB  - GeoScienceWorld
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Boix, Carme
A1  - Frijia, Gianluca
A1  - Vicedo, Vicent
A1  - Bernaus, Josep M.
A1  - Di Lucia, Matteo
A1  - Parente, Mariano
A1  - Caus, Esmeralda
T1  - Larger foraminifera distribution and strontium isotope stratigraphy of the La Cova limestones (Coniacian-Santonian, "Serra del Montsec", Pyrenees, NE Spain)
JF  - Cretaceous research
N2  - The Upper Cretaceous La Cova limestones (southern Pyrenees, Spain) host a rich and diverse larger foraminiferal fauna, which represents the first diversification of K-strategists after the mass extinction at the Cenomanian-Turonian boundary.
 The stratigraphic distribution of the main taxa of larger foraminifera defines two assemblages. The first assemblage is characterised by the first appearance of lacazinids (Pseudolacazina loeblichi) and mean-dropsinids (Eofallotia simplex), by the large agglutinated Montsechiana montsechiensis, and by several species of complex rotalids (Rotorbinella campaniola, Iberorotalia reicheli, Orbitokhatina wondersmitti and Calcarinella schaubi). The second assemblage is defined by the appearance of Lacazina pyrenaica, Palandrosina taxyae and Martiguesia cyclamminiformis.
 A late Coniacian-early Santonian age was so far accepted for the La Cova limestones, based on indirect correlation with deep-water fades bearing planktic foraminifers of the Dicarinella concavata zone. Strontium isotope stratigraphy, based on many samples of pristine biotic calcite of rudists and ostreids, indicates that the La Cova limestones span from the early Coniacian to the early-middle Santonian boundary. The first assemblage of larger foraminifera appears very close to the early-middle Coniacian boundary and reaches its full diversity by the middle Coniacian. The originations defining the second assemblage are dated as earliest Santonian: they represent important bioevents to define the Coniacian-Santonian boundary in the shallow-water facies of the South Pyrenean province.
 By means of the calibration of strontium isotope stratigraphy to the Geological Time Scale, the larger foraminiferal assemblages of the La Cova limestones can be correlated to the standard biozonal scheme of ammonites, planktonic foraminifers and calcareous nannoplankton. This correlation is a first step toward a larger foraminifera standard biozonation for Upper Cretaceous carbonate platform facies.
KW  - Larger Foraminifera
KW  - Biostratigraphy
KW  - Strontium isotope stratigraphy
KW  - Coniacian-Santonian boundary
KW  - Shallow-water carbonates
KW  - Pyrenees
KW  - Spain
Y1  - 2011
U6  - https://doi.org/10.1016/j.cretres.2011.05.009
SN  - 0195-6671
VL  - 32
IS  - 6
SP  - 806
EP  - 822
PB  - Elsevier
CY  - London
ER  -