New mammal and bird tracks from the Lower Oligocene of the Ebro Basin (NE Spain): implications for the Palaeogene ichnological record

Abstract

The Ebro Basin (Spain) is one of the few worldwide areas where Paleogene avian and mammal tracksites have been found. A new unpublished tracksite known as La Sagarreta is here described. The tracksite is located in a sandstone-dominated outcrop from the Early Oligocene Peralta Fm. in the northern-central sector of the basin. Six different ichnotaxa have been identified. Four belong to mammals, including perissodactyl (cf.Plagiolophustipus isp), artiodactyl (Megapecoripeda isp. and cf. Pecoripeda isp.) and carnivoramorph tracks (cf. Canipeda isp.), and the other two to avian tracks (Aviadactyla vialovi and Gruipeda dominguensis). La Sagarreta presents a high ichnodiversity with the presence of a medium size member (or relative) of the genus Plagiolophus, one medium and one small sized artiodactyl that probably belong to the family Entelodontidae, one medium size unidentified carnivorous mammal and two types of birds. La Sagarreta tracksite is the most diverse Early Oligocene tracksite at Ebro Basin and one of the few palaeontologic vertebrate records at the central area of the basin.

Salt Production and the Geoheritage of the Huesca Province (Spain): Context, History, and Potential as an Educational Resource

“…Just one kilometer northwest of the city of Peralta, in an outcrop that can be easily reached, there are remains of an early Oligocene paleo-beach (Figure 6b). Along ripple marks, ichnites from six different types of animals have been recently identified: two birds and four small-and medium-sized mammals [63][64][65].…”

“…However, an analysis of the compulsory education curriculum shows in Spain that these aspects are not always taken into account, nor is there a sequence of progressive Just one kilometer northwest of the city of Peralta, in an outcrop that can be easily reached, there are remains of an early Oligocene paleo-beach (Figure 6b). Along ripple marks, ichnites from six different types of animals have been recently identified: two birds and four small-and medium-sized mammals [63][64][65].…”

El yacimiento de icnitas de artiodáctilos de Fondota (Abiego, Huesca): paleoambiente e icnotafonomía

“…La Cuenca del Ebro presenta una excepcional riqueza en yacimientos icnológicos de vertebrados del Cenozoico (Astibia et al, 2007;Rabal-Garcés et al, 2018 y referencias). Entre ellos, destaca el yacimiento de Fondota del Oligoceno inferior de Abiego (Huesca), que es uno de los yacimientos con mayor número de icnitas y rastros en la cuenca (Rabal-Garcés et al, 2018;Linares et al, 2021).…”

“…Desde el punto de vista litoestratigráfico, el yacimiento se localiza en la parte inferior de la Formación Peraltilla (Luzón, 2005;Linares et al, 2021). Se trata de una unidad aluvial de procedencia pirenaica y sus depósitos forman parte del sistema fluvial de Huesca (Hirst y Nichols, 1986).…”

Nuevas icnitas de grandes mamíferos en el Mioceno de la Cuenca del Ebro (Huesca, España)

“…La Cuenca del Ebro ha demostrado ser en los últimos años una zona especialmente rica en yacimientos de icnitas del cenozoico (Astibia et al, 2007;Díaz-Martínez et al 2016;2020;Rabal-Garcés et al, 2018;Linares et al, 2022). Este registro icnológico abarca más de 20 millones de años y presenta una elevada icnodiversidad, con la mayoría de los grupos principales de vertebrados representados (aves, mamíferos carnívoros, artiodáctilos, perisodáctilos, reptiles, etc.…”