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3 new dinosaur papers on Geogaceta

3 new dinosaur papers on Geogaceta, available as free pdf files:
Boutakiout, M., Hadri, M., Nouri, J., Diaz-Martinez, I. &
Perez-Lorente, F. 2009. Prospecciones paleoicnologicas en el sinclinal
de Iouaridene (Alto Atlas, Marruecos). Cuantificación de yacimientos y
de icnitas [Paleoichnological explorations in the west part of the
Iouaridene syncline (Hight Atlas. Morocco). Inventory of the sites and
ichnite number]. Geogaceta, 45, 51-54.

ABSTRACT. The Iouaridene syncline is a is famous palaeontological site
among the ichnologists for several reasons: i) the time of the site is
known - the first footprint paper were published in 1937; ii) the
discovery of the sauropod trackway Breviparopus, Dutuit and Ouazzou,
1980 used as narrow gauge morphotipe by Farlow (1992); iii) the
succesive discussions about the age of the “red beds” where the
ichnites were found, and in consequence, the variations in the
footprint age attributions; and iv) the discussion about the swimmer
dinosaurs in manus-only sauropod trackways. The exploration on the
area and the bibliographical review have allowed to verify many of the
former suppositions and to adjust the age of the mentioned sauropod
trackway, fact of great importancy in the dinosaur palaeoichnology.

Key words: Dinosaur footprints, new sites, Iouaridene, Morocco

Ruiz-Omenaca, J.I., Pinuela, L. & Garcia-Ramos, J.C. 2009.  Nuevos
restos de ornitopodo (Ornithischia: Ankylopollexia) del Jurasico
Superior de Tazones, Asturias (Formacion Terenes) [New ornithopod
remains (Ornithischia: Ankylopollexia) from the Late Jurassic of
Tazones, Asturias, North Spain (Tereñes Formation)].  Geogaceta, 45,

ABSTRACT. Two dorsal vertebral centra of an ornithopod dinosaur from
the Late Jurassic of the Principality of Asturias (north Spain) are
described. They come from an outcrop of the Terenes Formation
(Kimmeridgian) at Tazones harbour (Villaviciosa). They are identified
as a juvenile indeterminate ankylopollexian. The vertebrae are the
first dinosaur bony remains found to date in the Terenes Formation,
where dinosaur footprints are, on the other hand, very abundant. We
estimate that the owner of the vertebrae was 4.6-5 meters in total
length. When adult, the Tazones ankylopollexian were capable of make
the big ornithopod footprints recovered in the Kimmeridgian-Tithonian
of both Asturias and Portugal, made by individuals up to 2.8 m in hip
height (~7.8 m of total length).

Key words: Dinosauria, Ornithopoda, Camptosauridae, Kimmeridgian,
dorsal vertebrae.

Ruiz-Omenaca, J.I., Pereda Suberbiola, X., Torcida Fernandez-Baldor,
F., Maisch, M., Izquierdo, L.A., Huerta, P. Contreras, R., Montero
Huerta, D., Perez Martinez, G., Urien Montero, V. & Welle, J. 2009.
Resto mandibular de ornitopodo iguanodontoideo (Dinosauria) del
Cretacico Inferior de Salas de los Infantes (Burgos) en las
colecciones del Institut fur Geowissenschaften de Tubinga (Alemania)
[A dentary fragment of an iguanodontoid ornithopod (Dinosauria) from
the Early Cretaceous of Salas de los Infantes (Burgos, Spain) in the
collections of the Institut für Geowissenschaften of Tubingen
(Germany)]. Geogaceta, 45, 63-66

ABSTRACT. A dentary fragment that preserves several teeth in situ of
an ornithopod dinosaur from the Lower Cretaceous of Salas de los
Infantes (Burgos, Spain) is described. The general aspect and the
conservation of the rock associated with the fossil suggest that it
would come from the Pinilla de los Moros Formation (upper
Hauterivian-lower Barremian). The material takes part, together with
other fossils of dinosaurs and crocodilians, of a collection gathered
at the end of the 1960’s and deposited nowadays in the Institut fur
Geowissenschaften of the University of Tubingen (Germany). The dentary
teeth exhibit a distal primary ridge and a mesial secondary ridge, as
typically in basal iguanodontoids. Nevertheless, some teeth show a
single subcentral carina and lack subsidiary ridges, as in
hadrosaurids. Unlike hadrosaurids, however, the Salas specimen has
probably one functional tooth and one replacement crown per dentary
tooth position, retaining the plesiomorphic state present in basal
iguanodontoids. Due to the fragmentary nature of the material, it is
provisionally assigned to Iguanodontoidea indet.

Key words: Ornithopoda, Iguanodontoidea, Lower Cretaceous, Burgos, Spain.


Jose Ignacio Ruiz-Omenaca
Museo del Jurasico de Asturias (MUJA)
E-33328 Colunga, Spain