The origin of the saline waters in the Villafáfila lakes (NW Spain). A hydrogeological, hydrochemical, and geophysical approach.

Villafáfila lakes are a natural reserve included in the intergovernmental RAMSAR agreements for conservation of wetlands, with special interest for their brackish-saline waters. These lakes are located at the western margin of the Duero basin, whose aquifer system has no evaporitic rocks upstream. Understanding the origin of the lake's salinity, the groundwater circulation and the distribution of the brackish-saline waters in the area is important not only for the preservation and management of the natural reserve, but for human water consumption as well.

, a new sauropod from the lower Cretaceous of Iberia in the initial radiation of somphospondylans in Laurasia.

The sauropod of El Oterillo II is a specimen that was excavated from the Castrillo de la Reina Formation (Burgos, Spain), late Barremian-early Aptian, in the 2000s but initially remained undescribed. A tooth and elements of the axial skeleton, and the scapular and pelvic girdle, represent it. It is one of the most complete titanosauriform sauropods from the Early Cretaceous of Europe and presents an opportunity to deepen our understanding of the radiation of this clade in the Early Cretaceous and study the paleobiogeographical relationships of Iberia with Gondwana and with other parts of Laurasia.