Nouvelles espèces d’ostracodes de l’Albien et du Cénomanien d’Estremadura (Port...

• Author(s): Andreu, B.
• Date: 2008
• Persistent ID: http://hdl.handle.net/10362/1506
• Origin: Repositório Institucional da UNL
• Subject(s): Ostracodes; datation; associations; middles of living; palaeobiogeography; Albian; Cenomanian; Portugal
• Document Type: Article
• Language: French

Description

Examination of samples from eight outcrops from Albian and Cenomanian of Estremadura, induced to take a census of sixty-two species and subspecies of Ostracodes among which fifteen are new and described here. Their associations pennited - first, to characterize three faunistic sets: a lower and middle Albian set with a mediolittoral and infralittoral (shallow marine} sedimentation; an upper Albian s.l. (near formations of Rudists}; a lagoonal lower Cenomanian; - on the other hand, to state local comparisons with the middle Cretaceous of Southern France, of the South-pyrenean Zone (Sierra d' Aulet: district of Sopeira), of the district of Oviedo (Northwestern Spain), and of the Aragonese Iberian Range (Aragon and Maestrazgo), placing in a prominent position faunistic exchanges of Ostracodes between the above-mentioned regions and the Estremadura, during the lower Cenomanian.