TY  - JOUR
A1  - Caus, Esmeralda
A1  - Parente, Mariano
A1  - Vicedo, Vicent
A1  - Frijia, Gianluca
A1  - Martinez, Ricard
T1  - Broeckina gassoensis sp nov., a larger foraminiferal index fossil for the middle Coniacian shallow-water deposits of the Pyrenean Basin (NE Spain)
JF  - Cretaceous research
N2  - The Upper Cretaceous shallow-water carbonates of the Pyrenean Basin (NE Spain) host rich and diverse larger foraminiferal associations which witness the recovery of this group of protozoans after the dramatic extinction of the Cenomanian-Turonian boundary interval. In this paper a new, large discoidal porcelaneous foraminifer, Broeckina gassoensis sp. nov., is described from the middle Coniacian shallow-water deposits of the Collada Gasso Formation, in the Boixols Thrust Sheet. This is the first complex porcelaneous larger foraminifer of the Late Cretaceous global community maturation cycle recorded in the Pyrenean bioprovince. It differs from the late Santonian-early Campanian B. dufrenoyi for its smaller size in A and B generations and the less developed endoskeleton, which shows short septula. Broeckina gassoensis sp. nov. has been widely employed as a stratigraphic marker in the regional geological literature, under the name of "Broeckina", but its age was so far controversial. Its middle Coniacian age (lowermost part of the Peroniceras tridorsatum ammonite zone), established in this paper by strontium isotope stratigraphy, indicates that it took about 5 My after the Cenomanian-Turonian boundary crisis to re-evolve the complex test architecture of larger foraminifera, which is functional to their relation with photosymbiotic algae and K-strategy.
KW  - Larger Foraminifera
KW  - Biostratigraphy
KW  - Strontium isotope stratigraphy
KW  - Coniacian
KW  - Pyrenees
KW  - Spain
Y1  - 2013
U6  - https://doi.org/10.1016/j.cretres.2013.08.002
SN  - 0195-6671
SN  - 1095-998X
VL  - 45
SP  - 76
EP  - 90
PB  - Elsevier
CY  - London
ER  - 
TY  - JOUR
A1  - Vicedo, Vicent
A1  - Caus, Esmeralda
A1  - Frijia, Gianluca
T1  - Late Cretaceous alveolinaceans (larger foraminifera) of the Caribbean palaeobioprovince and their stratigraphic distribution
JF  - Journal of systematic palaeontology
N2  - Architectural analysis of the Late Cretaceous alveolinaceans of the Caribbean palaeobioprovince has made it possible to separate four genera: Praechubbina, Chubbinella gen. nov., Chubbina and Caribalveolina. The first three genera belong to the family Rhapydioninidae, while the fourth is placed in the family Alveolinidae. Two species, Praechubbina breviclaustra and P. oxchucensis sp. nov., represent the primitive genus Praechubbina, while the species cardenasensis and obesa, previously ascribed to this genus, must be reassigned respectively to Chubbinella gen. nov. and Caribalveolina. The species Chubbina jamaicensis, C. macgillavryi and C. fourcadei sp. nov. complete the inventory of Chubbina. The alveolinid genus Caribalveolina comprises two species, C. obesa and C. michaudi. Caribbean alveolinaceans include two successive assemblages. The lower assemblage is characterized by Praechubbina oxchucensis, P. brevisclaustra, Chubbinella cardenasensis and Caribalveolina obesa. The upper assemblage is represented by the genus Chubbina, with C. fourcadei, C. jamaicensis and C. macgillavryi, and Caribalveolina michaudi. The age of the lower assemblage is uncertain (probably Late CampanianEarly Maastrichtian), while the upper assemblage has been dated by strontium isotope stratigraphy as Late Maastrichtian.
KW  - alveolinaceans
KW  - larger foraminifera
KW  - shell-architecture
KW  - Caribbean
KW  - biostratigraphy
KW  - Sr-isotope stratigraphy
Y1  - 2013
U6  - https://doi.org/10.1080/14772019.2011.637517
SN  - 1477-2019
VL  - 11
IS  - 1
SP  - 1
EP  - 25
PB  - Routledge, Taylor & Francis Group
CY  - Abingdon
ER  -