Quelonios y arcosaurios en el Cretácico Superior del País Vasconota preliminar

  1. Huberto Astibia
  2. Francisco García-Garmilla
  3. Xabier Orue-Etxebarria
  4. Julio Rodríguez Lázaro
Journal:
Kobie. Ciencias naturales

ISSN: 0214-6967

Year of publication: 1985

Issue: 15

Pages: 195-198

Type: Article

More publications in: Kobie. Ciencias naturales

Abstract

At the surroundings of Laño locality (SW of the Basque Country) appears a section of the Cretaceous-Tertiary boundary where two depositíonal sequences, separated by one unconformity, can be distinguised. The lower sequence (Campanian-Maastrichtian) shows a marine regressive evolution; its modern levels, dated as "Rognacían", contain the vertebrate remains. In a fírst taxonomícal approach it can be discerned, among those: several bony fragments of dínosaurs, turtle carapace-plates and crocodile teeth. The upper sequence is inclued in the Paleocene and exhibit a transgressive trend, with a marine ínvertebrate fauna associated.