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

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Altres publicacions en: Kobie. Ciencias naturales

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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.

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