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New Mexico ankylosaur osteoderms + Eubrontes track from India + Bristol Dinosaur Project (free pdfs)



Ben Creisler
bcreisler@gmail.com

A number of recent and not so recent dinosaur papers with free pdfs:

Michael E. Burns and Spencer G. Lucas (2015)
Biostratigraphy of ankylosaur (Dinosauria: Ornithischia) osteoderms
from New Mexico.
Fossil Record 4, New Mexico Museum of Natural History and Science
Bulletin 67: 9-13
Free pdf links:
https://www.academia.edu/11852161/Biostratigraphy_of_ankylosaur_osteoderms_from_New_Mexico
http://www.researchgate.net/profile/Michael_Burns3/publication/274698450_Biostratigraphy_of_ankylosaur_osteoderms_from_New_Mexico/links/55256c2a0cf24b822b4039d7.pdf?inViewer=true

Several previously undescribed specimens of ankylosaur osteoderms from
New Mexico, allow for a revision of the biostratigraphic distribution
of New Mexican ankylosaur taxa. An osteoderm from the Upper Jurassic
Peterson Quarry (Morrison Formation, Brushy Basin Member) referable to
Gargoyleosaurus or Mymoorapelta represents the first reported
occurrence of Jurassic ankylosaur material in New Mexico. An
ankylosaurid osteoderm from the De-na-zin Member of the Kirtland
Formation is consistent with other ankylosaurid material previously
collected from the unit. Several osteoderm specimens collected from
the Fruitland Formation (Fossil Forest Member) are referable to the
nodosaurid Glyptodontopelta mimus. Previously known only from the
Maastrichtian Naashoibito Member of the Ojo Alamo Formation, these
specimens extend the stratigraphic range of the taxon back at least 5
My.

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Grzegorz PIEŃKOWSKI, Paweł BRAŃSKI, Dhirendra K. PANDEY, Ján SCHLÖGL,
Matthias ALBERTI & Franz T. FÜRSICH (2105)
Dinosaur footprints from the Thaiat ridge and their
palaeoenvironmental background, Jaisalmer Basin, Rajastan, India.
Volumina Jurassica 13 (1):  17-26
DOI: 10.5604/17313708 .1148553
http://voluminajurassica.org/abstracted.php?level=5&ICID=1148553
http://voluminajurassica.org/fulltxt.php?ICID=1148553

Two dinosaur footprints: Eubrontes cf. giganteus and Grallator tenuis,
both attributed to theropods, have been found in the Lower Jurassic
Thaiat Member of the Lathi Formation at the Thaiat ridge, near
Jaisalmer in western Rajasthan, India. The footprints were left in
sediments of a tidal origin, located in profile a few meters above a
marked transgressive/flooding surface. They show different states of
preservation – the smaller Grallator tenuis represents a
well-preserved concave epirelief footprint on the upper surface of a
sandstone containing nerineid gastropod shells, while the bigger
Eubrontes cf. giganteus footprint shows a rare state of preservation
as a positive epirelief on the top of a calcareous sandstone bed,
where recent erosion exposed the footprint cast by removing the mud
above and around the footprint. The Thaiat ridge section has been
amended in its lower part, to indicate the marked transgressive
surface. Geochemical analyses and calculated weathering indices (such
as CIA) show that the hinterland climate was seasonal to semi-arid
during deposition of that part of the succession.

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Pedro A. Viega & Michael J. Benton (2014)
The Bristol Dinosaur Project – a conservation and preparation overview.
Journal of Paleontological Techniques, 13: 50-64
http://www.jpaleontologicaltechniques.org/pasta3/JPT%20N13/pdf/JPT13_pg_50_64.pdf

The Bristol Dinosaur Project involved extensive preparation and
conservation of a large collection of macro- and microvertebrate
fossils. The starting point was some four tonnes of fossiliferous
cave-fill breccia, and the laboratory procedures involved a broad
range of physical and chemical approaches to reduce this matrix and
extract, conserve, and curate the dinosaur bones and microvertebrate
remains. The initial state of the remains, and the laboratory
procedures followed provide a good case study of historical
collections found in many institutions that are in urgent need of care
and dedicated work. The program also provided examples of good and bad
practice, while training students in laboratory skills.

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Sandra Val, Rubén García & Domingo López (2014)
Preliminary results on the chemical preparation of dinosaur eggshells.
Journal of Paleontological Techniques 13: 29-37
http://www.jpaleontologicaltechniques.org/pasta3/JPT%20N13/pdf/JPT13_pg_29_37.pdf

Traditionally, techniques used in the preparation of fossil eggshells
are based on the similarity of the matrix and the eggshells. Often,
these techniques involve aggressive preparation and frequently lead to
significant dissolution or abrasion of the eggshells. The damage often
does not allow proper taxonomical studies, because eggshell features
were potentially destroyed. Based on our experience, we propose a new
method for the chemical preparation of fossil eggshells, specifically
those composed of calcium carbonate.