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Hadrosaurid dentary from Pyrenees of Spain



From: Ben Creisler
bcreisler@gmail.com


A new online paper:

Penélope Cruzado-Caballero, José Ignacio Ruiz-Omeñaca, Rodrigo Gaete,
Violeta Riera, Oriol Oms & José Ignacio Canudo (2013)
A new hadrosaurid dentary from the latest Maastrichtian of the
Pyrenees (north Spain) and the high diversity of the duck-billed
dinosaurs of the Ibero-Armorican Realm at the very end of the
Cretaceous.
Historical Biology (advance online publication)
DOI:10.1080/08912963.2013.822867
http://www.tandfonline.com/doi/full/10.1080/08912963.2013.822867#.UiXzJza1EYE


In the latest Maastrichtian, the European hadrosauroid fauna was more
diverse than those of North America and Asia. The European record of
hadrosaurid dentaries is an example of this diversity, and most of the
sites with mandibular remains are located in the Ibero-Armorican
Realm. Within the Iberian Peninsula, most of the remains are located
in the Tremp Basin (South Central Pyrenees). Two of the three valid
hadrosaurid taxa defined in this basin are from the Blasi sites (Arén,
Huesca province): Arenysaurus ardevoli (Blasi-3) and Blasisaurus
canudoi (Blasi-1). A new locality in Blasi (Blasi 3.4) has provided a
new dentary from an indeterminate euhadrosaurid. This dentary presents
some characters intermediate between Arenysaurus and Blasisaurus, some
characters similar to Pararhabdodon isonensis (from the nearby
province of Lleida), and some characters of its own. Nevertheless, due
to its fragmentary character, without dentition or its edentulous
anterior part, it cannot be determined above the level of
Euhadrosauria. It thus represents a fourth Iberian euhadrosaurian
taxon in the Ibero-Armorican Realm, different from Arenysaurus,
Blasisaurus and Pararhabdodon, increasing the diversity of
hadrosauroids in this realm at the very end of the Cretaceous.