[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

5 new Mesozoic vertebrate papers on Geogaceta



5 new Mesozoic vertebrate papers in the last number of Geogaceta,
available as free pdf files (in Spanish):

Perez-Garcia, A. & F. Gasco. 2011. Exceptional preservation of an
intervertebral disc attributed to a marine reptile, discovered in the
Sierra de Albarracin (Iberian Range, Spain) in the nineteenth century.
Geogaceta, 48 (for 2010), 75-78.

ABSTRACT. An element that is part of the collection of vertebrate
paleontology of the MNCN since before the Spanish Civil War is
described. The specimen was found in the Jurassic of the Sierra de
Albarracin, in the Iberian Range, and is interpreted as an
intervertebral disc with exceptional preservation. This specimen is
attributed to a marine reptile. We discuss its possible systematic
assignation.

Key words: Jurassic, Albarracin, intervertebral disc, Reptilia.

http://www.sociedadgeologica.es/archivos/geogacetas/geo48/art19.pdf
-------------------------------------------

Ruiz-Omenaca, J.I., X. Pereda Suberbiola, J. Company & M. Belinchon.
2011. Archosaurian teeth (Crocodyliformes, Theropoda) from the Late
Jurassic of Bunol (Valencia province, E Spain). Geogaceta, 48 (for
2010), 79-82.

ABSTRACT. Five isolated archosaurian teeth from Valencia province
(eastern Spain) are studied in this work. They have been found in the
«Cantera Carcalin» site, an outcrop of the marine Higueruelas
Formation (Tithonian) in the vicinity of Bunol town. They represent
the first direct evidence of tetrapods in this formation, in which, up
to the moment, only dinosaur tracks had been found in a locality of
the adjacent Teruel province. Four of the teeth pertain to
crocodyliforms, three to indeterminate crocodyliforms and another to a
teleosaurid identified as cf. Machimosaurus sp., a taxon already known
in the Kimmeridgian of the Iberian Peninsula (Asturias and Portugal).
The fifth tooth is assigned to a theropod dinosaur, probably an
allosauroid.

Key words: Tithonian, Thalattosuchia, Machimosaurus, Dinosauria, Carnosauria.

http://www.sociedadgeologica.es/archivos/geogacetas/geo48/art20.pdf

-------------------------------------------
Ruiz-Omenaca, J.I., L. Pinuela & J.C. Garcia-Ramos. 2011. The first
ornithopod tooth from the Late Jurassic of Spain (Asturias).
Geogaceta, 48 (for 2010), 83-86.

ABSTRACT. One isolated ornithopod dinosaur tooth from the Principality
of Asturias (northern Spain) is studied in this work. It has been
found in the Aranzon cliffs (Villaviciosa municipality), in an outcrop
of the deltaic Lastres Formation (Kimmeridgian). It is a terminally
resorbed tooth, identified by its ornamentation and resorption facets
as a left maxillary crown. Its morphology, with a prominent primary
ridge distally displaced in labial view, is similar to that of
maxillary teeth of Early Cretaceous basal iguanodontoids, but also to
that of the Late Jurassic camptosaurids Camptosaurus dispar from North
America and Camptosaurus prestwichii and Draconyx loureiroi from
Europe. It recalls also the Late Jurassic dryosaurid Dryosaurus
lettowvorbecki from Tanzania, so it is assigned to Dryomorpha indet.
It represents the first ornithopod tooth described from the Jurassic
of Spain.

Key words: Kimmeridgian, Lastres Formation, Dinosauria, Ornithopoda, Dryomorpha

http://www.sociedadgeologica.es/archivos/geogacetas/geo48/art21.pdf
-------------------------------------------

Perez-Garcia, A., X. Murelaga, J.A. Torres, L. Ignacio Viera & F.R.
Saez-Benito. 2011. Turtles from the Early Cretaceous
(Hauterivian-Barremian) of La Rioja (Cameros Basin, Spain). Geogaceta,
48 (for 2010), 87-90.

ABSTRACT. The information about the turtles from the Early Cretaceous
of the Iberian Peninsula is, until now, very poor. We describe here
three specimens found in the Lower Cretaceous (Hauterivian-Barremian)
of La Rioja, of at least two different taxa, being one of them
Salasemys pulcherrima. This study provides new data on the
representatives of the Spanish Eucryptodiran turtles.

Key words: Cameros Basin, La Rioja, turtle, Eucryptodira, Salasemys.

http://www.sociedadgeologica.es/archivos/geogacetas/geo48/art22.pdf
-------------------------------------------

Boutakiout, M., M. Masrour, L. Ladel, I. Diaz-Martínez & F.
Perez-Lorente. 2011. New Domerien dinosaur footprint sites
fromIbaqalliwn (Ait Bou Guemez Hight Central Atlas. Moroco).
Geogaceta, 48 (for 2010), 91-94.

ABSTRACT. During the 2009's summer courses (universities Rabat-La
Rioja) 6 new paleoichnological sites are found in the Bou Guemez
river. The previously know Ibaqalliwn-Talsnant sites are located in
the close west. All new, and Ibaqualliwn-Talsnant fossil traces, are
print over the upper levels of marine limestones from Arganane
Formation (Domerian). The likewise Domerian lowermost part continental
sediments of the superposed Azilal Formation is placed to 5 m above
the ichnites. The litological composition, invertebrate fossil
content, and number of ichnological levels is similar in the Assif
Ait-n-Bou Guemez-Assif-n-Rbat zone. In spite of the Quaternary aluvial
sediments cover, the geological properties are enough to define
exactly the same stratigraphic position of the sites. The Arganane
Formation dissapear to east part and the new sites are the east end of
the Bou Guemez dinosaur footprints outcrops. It is important show the
sauropod supremacy in the Bou Guemez zone.

Key words: Footprints, dinosaur, Domerian, Hight Atlas, Morocco.

http://www.sociedadgeologica.es/archivos/geogacetas/geo48/art23.pdf
-------------------------------------------



-------------------------------------------
Jose Ignacio Ruiz-Omenaca
Museo del Jurasico de Asturias (MUJA)
E-33328 Colunga, Spain
www.dinoastur.com
www.museojurasicoasturias.com
www.aragosaurus.com
-------------------------------------------