Becerril del Carpio (Jurassic to of Spain)

Where: Spain (42.7° N, 4.3° W: paleocoordinates 34.7° N, 7.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Santa María la Real Member (Aguilar Formation), Late/Upper Tithonian to Late/Upper Tithonian (150.8 - 140.2 Ma)

• The age of the levels where the fossils were found would be late Tithonian-early Berriasian according to the biostratigraphic works made in the Santa María de la Real Mb. The charophyte assemblage found by Hernández et al. in this member corresponds to the Maillardii biozone, which has an interval of a late Tithonian-early Middle Berriasian age. Additionally, Schudack in his study of ostracods, found Clavator reidii var. pseudoglobatoroides at the top of the Santa María de la Real Mb., whose presence indicates that the upper part of the member cannot be older than early Berriasian.

• group of beds-level stratigraphic resolution

Environment/lithology: spring; lithified, stromatolitic, oncoidal travertine

• Lacustrine-palustrine system with frequent but slight variations on the water level, these being more prominent on the margins of the basin within semi-arid conditions. More locally, in the studied area, hot-springs deposits containing fossil plant remains and related to a hydrothermal source associated with the Villela Fault were located on the western margin of the Aguilar lacustrine/palustrine system. Due to the facies observed, this association is interpreted by Hernández et al. as a fossil travertine.
• The fossil remains were found in palustrine limestones with channel-shaped structures where concentrically laminated spherical oncolithic levels occur, and vegetation remains are coated by bacterial and cyanobacterial growth

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Las Loras UNESCO Geopark

Primary reference: A. A. Santos, A. Nel, I. Rodríguez-Barreiro, L. M. Sender, T. Wappler and J. B. Diez. 2022. Insect and plant diversity in hot-spring ecosystems during the Jurassic-Cretaceous boundary from Spain (Aguilar Fm., Palencia). Biology 11(273) [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 224315: authorized by Matthew Clapham, entered by Matthew Clapham on 10.02.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Odonata - Aktassiidae
? Aktassiidae indet.
? Aktassiidae indet. Pritykina 1968 true dragonfly
AG-I-02
 Odonata - Cymatophlebiidae
Cymatophlebia cf. longialata
Cymatophlebia cf. longialata Germar 1839 true dragonfly
AG-I-01, AG-I-03
 Bennettitales -
cf. Pterophyllum sp., cf. Ptilophyllum sp., cf. Ptilophyllum pectiniformis, cf. Ptilophyllum acutifolium, cf. Ptilophyllum pecten
cf. Pterophyllum sp. Brongniart 1828
cf. Ptilophyllum sp. Morris 1840
cf. Ptilophyllum pecten Phillips 1829
Polypodiopsida
  -
Cladophlebis cf. denticulata