Bibliography and Index of the Sirenia and Desmostylia  

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"Badiola, Ainara"

Astibia, Humberto; Payros, Aitor; Pereda-Suberbiola, Xabier; Elorza, Javier; Berreteaga, Ana; Etxebarria, Nestor; Badiola, Ainara; Tosquella, Josep (detail)
Sedimentology and taphonomy of sirenian remains from the Middle Eocene of the Pamplona Basin (Navarre, western Pyrenees).
Facies 50(3-4): 463-475. 2 tabs. 7 figs.
Astibia, Humberto; Pereda-Suberbiola, Xabier; Bardet, Nathalie; Payros, Aitor; Berreteaga, Ana; Badiola, Ainara (detail)
Nuevos fósiles de sirenios en el Eoceno medio de la Cuenca de Pamplona (Navarra).
Revista Española de Paleontologia 21(1): 79-91. 2 tabs. 7 figs. May 2006.
–Engl. summ. Describes vertebrae and ribs of indeterminate dugongids.
Astibia, Humberto; Bardet, Nathalie; Pereda-Suberbiola, Xabier; Payros, Aitor; Buffrénil, Vivian de; Elorza, Javier; Tosquella, Josep; Berreteaga, Ana; Badiola, Ainara (detail)
New fossils of Sirenia from the Middle Eocene of Navarre (Western Pyrenees): the oldest West European sea cow record.
Geological Magazine 147(5): 665-673. 1 tab. 4 figs. DOI:10.1017/S0016756810000130 Sept. 2010.
Diaz-Berenguer, Ester; Badiola, Ainara; Moreno-Azanza, Miguel; Canudo, José Ignacio (detail)
First adequately-known quadrupedal sirenian from Eurasia (Eocene, Bay of Biscay, Huesca, northeastern Spain).
Nature Scientific Reports 8(5127):1-13. 11 figs. Mar. 23, 2018.
–ABSTRACT: Sirenians are the only extant herbivorous mammals fully adapted to an aquatic lifestyle. They originated in Africa during the Paleocene from an undetermined clade of afrotherian mammals, and by the end of the Eocene they were widely distributed across the tropical latitudes. Here we introduce Sobrarbesiren cardieli gen. et sp. nov. It is the first adequately-known quadrupedal sirenian from Eurasia and the oldest record of this clade from western Europe. Fossils have been recovered from the middle Lutetian (SBZ15) site of Castejón de Sobrarbe-41 (Huesca, Spain), and comprise many cranial and postcranial remains, including pelvic girdle and hind limb bones, from at least six sirenian individuals of different ontogenetic stages. Sobrarbesiren shows a suite of characters previously considered synapomorphies of different clades of derived sirenians, such as the presence of the processus retroversus of the squamosal and the pterygoid fossa, combined with ancestral characters such as the presence of an alisphenoid canal, a permanent P5, at least two sacral vertebrae, a primitive pelvis and functional femora and fibulae. Sobrarbesiren is recovered as the sister taxon of Dugongidae and represents a transitional stage of adaptation to aquatic life between the amphibious quadrupedal prorastomids and the aquatic quadrupedal protosirenids.

Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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