Castejón de Sobrarbe (Eocene of Spain)

Also known as Castejón de Sobrarbe-41 fossil site (CS-41)

Where: Huesca, Spain (42.3° N, 0.1° E: paleocoordinates 39.1° N, 2.9° W)

• coordinate estimated from map

When: Sobrarbe Formation, Lutetian (47.8 - 41.3 Ma)

• middle Lutetian

•The CS-41 fossiliferous level is in the uppermost part of the Sobrarbe Formation and has been correlated with nearby sections dated by magnetostratigraphy and benthic foraminifera21, placing CS-41 within the C19r chron and biozone SBZ15 (middle Lutetian, middle Eocene) and making these the oldest sirenian remains in western Europe.

• formation-level stratigraphic resolution

Environment/lithology: deltaic; mudstone

• This assemblage is interpreted as the infilling of an intertidal channel during a single energetic event, where all the remains dispersed over the tidal flat were trapped.
• CS-41 is a metre-thick level of mudstone, overlying laminated fine-grained sandstones with small burrowing traces. No lamination can be observed in the fossil-bearing bed, but the overlying siltstones present lamination and mud cracks, evidencing subaerial exposure.

Size class: macrofossils

Primary reference: E. Diaz Berenguer, A. Badiola, and J. I. Canudo. 2014. First mention of sirenians (Mammalia) with functional hind limbs in Europe (Lutetian, Southern Pyrenees, Spain). Society of Vertebrate Paleontology, Program and Abstracts 120 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 162506: authorized by Mark Uhen, entered by Mark Uhen on 26.09.2014, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Testudines - Podocnemididae
Eocenochelus eremberti2
Eocenochelus eremberti2 Broin 1977 sideneck turtle
Mammalia
 Sirenia -
Sobrarbesiren cardieli n. gen. n. sp.1
Sobrarbesiren cardieli n. gen. n. sp.1 Díaz-Berenguer et al. 2018 sirenian
1Díaz-Berenguer et al. 2018; 2Moreno-Azanza et al. 2021