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New dinosaur sites correlated with Upper Maastrichtian pelagic deposits in the Spanish Pyrenees: implications for the dinosaur extinction pattern in Europe

López Martínez, Nieves and Canudo, José Ignacio and Ardèvol, Lluís and Pereda Suberbiola, Xabier and Orue Etxebarria, Xabier and Cuenca Bescós, Gloria and Ruiz Omeñaca, José Ignacio and Murelaga, Xabier and Feist, Monique (2001) New dinosaur sites correlated with Upper Maastrichtian pelagic deposits in the Spanish Pyrenees: implications for the dinosaur extinction pattern in Europe. Cretaceous research. , 22 (1). pp. 41-61. ISSN 0195-6671

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Abstract

Six new dinosaurs sites have been found close to the Cretaceous/Tertiary boundary in Arén (south-central Pyrenees, Huesca, Spain) in coastal and non-marine deposits of the Arén and Tremp Formations. The sites contain articulated remains (skull elements, vertebrae, hind-limb bones) and isolated teeth and bones of hadrosaurids, three types of theropod teeth, one sauropod, at least seven types of eggshells (six ornithoid types and one Megaloolithidae probably from a sauropod), remains of other vertebrates, and four charophyte species. The fossil-bearing rocks have been correlated with marine sediments containing planktonic foraminifera from the uppermost Maastrichtian Abathomphalus mayaroensis Biozone. These rich and diversified dinosaur assemblages enable more accurate dating of the faunal changes that took place during the Maastrichtian in Europe and support the hypothesis of a sudden dinosaur extinction at the Cretaceous/Tertiary boundary.

Item Type:Article
Uncontrolled Keywords:Cretaceous/Tertiary boundary, Maastrichtian, Marine-continental correlations, Dinosaurs, Charophytes, Pyrenees
Subjects:Sciences > Geology > Paleontology
ID Code:9976
Deposited On:05 Feb 2010 11:36
Last Modified:01 Sep 2011 11:13

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