Research paper
The Upper Miocene fish fauna of the Fortuna Basin, as observed in the surroundings of Abanilla (Murcia province, Spain)
JEAN GAUDANT
USM 203 du Muséum National d’Histoire Naturelle et UMR 7207 du CNRS. 17 rue du Docteur Magnan, F-75013 Paris, France. jean.gaudant@orange.fr
Corresponding author
JESÚS MIGUEL SORIA
Universidad de Alicante, Departamento de Ciencias de la Tierra y Medio Ambiente, Apto 99, 03080 San Vicente del Raspeig, Alicante, Spain. jesus.soria@ua.es
IGNACIO FIERRO
Universidad de Alicante, Departamento de Ciencias de la Tierra y Medio Ambiente, Apto 99, 03080 San Vicente del Raspeig, Alicante, Spain. nacho.fierro@ua.es
SIMONA SAINT MARTIN
Muséum National d’Historia Naturelle, UMR 7207 MNHN/UPMC, Département Historie de la Terre, 8 rue Buffon, 75005 Paris, France. simsmart@mnhn.fr
ABSTRACT
Fossil fishes are present at two different stratigraphical levels near Abanilla, in the Upper Miocene of the Fortune basin (Murcia, Spain). The first site corresponds to a monospecific fossiliferous horizon, late Tortonian in age, which was present at La Serretilla before recent levelling works destroyed this outcrop. This horizon has mainly yielded fish remains and, exceptionally, articulated skeletons of clupeid fishes belonging to the species Sardina? crassa (Sauvage). The second fossiliferous site, which is stratigraphically situated in the basal part of the “Chicamo cycles”, belongs to the lowermost Messinian. These strata, both marly and diatomaceous contain a juvenile fish fauna and correspond to a spawning area in which marine stenohaline fishes were breeding and where the newly hatched fishes were beginning their development. The diatoms of the fossiliferous horizons are clearly indicative of a fully marine salinity and exclude the possibility of hypo- or hyperhaline conditions. The composition of the Chicamo fish fauna looks very similar to that the Campos del Río site and characterizes marginal marine conditions that differ strikingly from those which, like the Columbares site, in the Murcia-Cartagena basin, are indicative of a connection to open sea.
Keywords: Teleostean fishes, spawning area, diatoms, Tortonian, Messinian.
How to cite: Gaudant, J., Soria, J.M., Fierro, I & Saint Martin, S. 2015. The Upper Miocene fish fauna of the Fortuna Basin, as observed in the surroundings of Abanilla (Murcia province, Spain). Spanish Journal of Palaeontology, 30 (1), 65-78.
Received 08 July 2014, Accepted 10 January 2015, Published 30 June 2015
https://doi.org/10.7203/sjp.30.1.17202
