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Three new publications on dinosaur tracks in the last issue of the Spanish journal ZUBIA



Two in Spanish and one in English:

Nerea JIMENEZ HERNANDEZ, Elsa MARTINEZ LAFUENTE, Ignacio DIAZ-MARTINEZ
& Felix PEREZ-LORENTE. 2012. Icnitas teropodas (Dinosauria) muy
grandes en el Grupo de Enciso. Yacimiento de Los Piojos (Igea, La
Rioja, Espana) Zubia, 30: 29-43.

Great theropod (Dinosauria) ichnites in Enciso Group. Los Piojos
tracksite (Igea, La Rioja, Spain)

ABSTRACT: In this paper, we study the morphological and metric
characteristics of a theropod trackway with 13 footprints, located at
the site of Los Piojos (Igea, La Rioja). The footprints are compared
with others found in Igea, La Rioja and the main large theropod
ichnotaxa world record. Los Piojos footprints are large and have broad
toes, and show different characters that distinguish them from other
known footprints. In this paper does not define a new icnotaxon
waiting to further discoveries of this type of footprints. Special
attention is needed for the conservation and preservation, because the
site is on the side of the road and therefore subject to many risks of
destruction

Key words: Giant footprints, theropods, Lower Cretaceous, La Rioja.

Free PDF here:  http://www.academia.edu/attachments/30400257/download_file
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Mike ROMANO & Martin A. WHYTE. 2012. Information on the foot
morphology, pedal skin texture and limb dynamics of sauropods:
evidence from the ichnological record of the Middle Jurassic of the
Cleveland Basin, Yorkshire, UK. Zubia, 30: 45-92.

ABSTRACT: New specimens of sauropod tracks, preserved mainly as
sandstone casts,have recently been found in the Middle Jurassic
Ravenscar Group of the Cleveland Basin, Yorkshire, UK. The tracks are
of Aalenian-Bathonian age and occur in the Saltwick, Cloughton and
Scalby formations. The wellpreserved tracks provide accurate
information on: a) the shape of the sauropod foot that made both manus
and pes tracks, and the number and structure of the pes clawed digits;
b) the skin texture of polygonal scales on the manus; and c) the limb
dynamics of the sauropod maker during locomotion, based on the 3D
dimensions of the sandstone cast and the preserved striations down the
sides of the casts.
The manus prints are generally non-diagnostic ichnotaxonomically and
show a range of outlines that may in part be due to preservation. Only
a single manus cast exhibits the presence of a pollex, sited above the
palmar surface. The pes specimens assigned to Brontopodus ichnosp.
indet., had five digits of which three (I-III ) were clawed and each
proximally enclosed by skin. A single manus print shows a small area
of skin impression with polygonal scales and typical of other reported
sauropod skin textures. This is the first recorded Middle Jurassic
dinosaur skin impression. Striations on the sides of manus and pes
casts are identified as representing both the T and K phases of leg
dynamics.
A brief review of selected ichnogenera assigned to a sauropod maker is
presented and the validity of these is discussed. Three distinct
ichnotaxa from the Middle Jurassic of Yorkshire, England, are
recognised, based on pes characteristics, as having been made by
sauropods: Brontopodus ichnosp. indet., Breviparopus? ichnosp. indet.
and Ichnogen. et ichnosp. indet., even though associated trackways are
generally lacking, and manus-pes couples are relatively rare (both due
to the type of coastal exposures).

Key words: sauropod tracks, foot morphology, skin texture, limb
dynamics, ichnotaxonomy, Jurassic, Yorkshire, UK.
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Majid HADRI & Felix PEREZ-LORENTE. 2012. Historia de yacimientos con
huellas de dinosaurio, desde su descubrimiento hasta su primer
estudio. Alrededores de El Mers (Marruecos). Zubia, 30: 93-140.

The history of the dinosaur tracksites from discovery to first study.
The El Mers (Morocco)

ABSTRACT: This written work is dedicated to showing the history of the
sites with dinosaur footprints. He agree with the objectives of the
I.E.R. conference cycle that take place in Enciso since 1992. The
conference is based on the experience of many working years on the
paleoichnological site studies. For its development we took advantage
of the late discovery made by us in Morocco. The aim is to show what
usually happens when many deposits arediscovered and in the steeps
that divided all the work.
The discovery of El Mers sites has been more complex than others.
Inaddition, traces described are truly interesting for the variety of
body types and structures that accompany some of them. It is the fisrt
time that the footprint structure types of 1ELM site are cited in
scientific literature.

Key words: Palaeoichnology, composite footprint structures, dinosaurs,
Bathonian, Middle Atlas, Morocco.
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Issues 1 to 28 (1983-2010) of Zubia are free in the web:
http://dialnet.unirioja.es/servlet/revista?codigo=1493
I suppose that number 30 will be online also soon.

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