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[dinosaur] Dinosaur tracks: Sauropod tracks from Morocco, Argentina, and China + deinonychosaurian tracks





Ben Creisler
bcreisler@gmail.com


Some recent (and not so recent) papers about dinosaur tracks. Most have free pdfs.

Free pdf:

L. Boudchiche, M. Masrour, M. Boutakiout, L. Hamzaoui, J.s Herrero Gascón and F. Pérez-Lorente (2017)
Jarrate Lbel: New Upper Cretaceous continental site in Morocco. A probable ornitischian non-onithopod trackway and three amble gait titanosauriform trackways.
Geogaceta 61: 19-22
http://www.sociedadgeologica.es/archivos/geogacetas/geo61/geo61_05p19_22.pdf


In this paper a new Upper Cretaceous site with sauropod footprints is described. The outcrop, found in Chott Tigri, in the meridional area of the High Plateau of Morocco, between the Saharan Atlas and the Middle Atlas, is separate from other known sites with dinosaur footprints. We have found: three trackways of titanosauriform features and variable gauge, and one trackway of an unknown dinosaur that we attribute to an ornithischian quadruped, but not an ornithopod. In this paper we have implemented calculations based on trackway analysis to deduce the glenoacetabular distance distance and the type of gait. In the three sauropod trackways the data are consistent with amble gait.


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Free pdf:

 J.I. Canudo, A. Garrido, J.L. Carballido & D. Castanera y L. Salgado (2017)
Icnitas de dinosaurios saurópodos en la Formación Rayoso (Cuenca Neuquina, Albiense, Argentina).
Geogaceta 61: 43-46
http://www.sociedadgeologica.es/archivos/geogacetas/geo61/geo61_11p43_46.pdf


Sauropod dinosaur tracks from the Rayoso Formation (Albian) in Neuquén (Argentina) are described for the first time. Evidence of two narrow-gauge sauropod trackways has been found in two distinct outcrops of the Rincón Member. One of the trackways consists of small-sized tracks and might belong to a juvenile individual. Another possibility is that the two trackways were produced by different species of sauropod. Dinosaur fossils are rare in the Rayoso Formation, possibly as a result of its arid depositional environment. Rebbachisaurid diplodocoids are one of the most abundant sauropods at the end of the Lower Cretaceous of the Neuquén Basin. Indeed, the only dinosaurs known from the Rayoso Formation belong to this family. Bearing in mind this exclusive presence and the association of narrow-gauge trackways with diplodocoids, it is tentatively proposed that the trackways under study were produced by rebbachisaurid diplodocoids.


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ZHANG Yanxia, CHEN Jun & JIANG Xiaojun (2017)
The Sauropod Footprints Research in Zhucheng, Shandong
Geological Review  63(2): 458-470
doi: 10.16509/j.georeview.2017.02.015
http://www.geojournals.cn/geOreV/ch/reader/view_abstract.aspx?file_no=20176302015&flag=1

pdf:

http://www.geojournals.cn/geOreV/ch/reader/create_pdf.aspx?file_no=20176302015&flag=1



The sauropods are the biggest animals on land in the Mesozoic.They are widely distributed in Jurassic and Cretaceous and evolve very successfully.Sauropod footprint fossils were found from the Early Jurassic to the Late Cretaceous.There are many sauropod footprint fossils were found in three sites in the Early Cretaceous,Huang longgou located the south of Zhucheng,Zhangzhuhewan and Tangdigezhuang located the north of Zhucheng,What are the similarities and differences among three sites of the sauropod dinosaur footprints at Zhucheng area,and do these footprints of the track makers all belong to the same kind of sauropod dinosaurs.? The area ratios of manus/pes prints foot based on a large number of data statistics indicated at least two different sauropods lived in Huanglonggou and Tangdigezhuang. Comparison of sauropods size in different times suggested the trend of evolution, which is the size become more and more smaller.The evolution is the result of changes in the environment.


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Free pdf:

WANG Baopeng, LI Jianjun, BAI Zhiqiang, CHANG Jieqiong & ZHANG Yongqiang (2017)
The First Discovery of Deinonychosaurian Tracks from Lower Cretaceous of Chabu, Otog Qi, Inner Mongolia and Its Significance.
Acta Scientiarum Naturalium Universitatis Pekinensis  53(1):  81-90
doi: 10.13209/j.0479-8023.2016.099
http://xbna.pku.edu.cn/EN/abstract/abstract3039.shtml


Thousands of footprint fossils have been discovered in the Lower Cretaceous of Chabu area in Otog Qi, Ordos city, Inner Mongolia, including theropod, sauropod and bird footprints as well. In 2014, a detailed survey was carried out around the Otog Field Museum of Geological Vestige (Tracksite: 8A and 8B) in Chabu area. Two functionally didactyl tracks attributed to deinonychosaurian theropods were firstly found. These two-toed tracks are assigned to Dromaeosauripus according a number of features. Two other theropod fossil footprints (Asianopodus robustus and Grallator) were found together with the two-toed tracks, which reflected the living habits of deinonychosaurs. The global record of didactyl theropod tracks (Dromaeopodidae) was enlarged by this discovery. It also helps to reveal the paleoecology of Chabu area and compare strata with other area.


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I can't find a free pdf link for this one yet:


YE Yong, JIANG Shan & PENG Guang-zhao (2016)
The Triassic Dinosaur Footprints in China.
Acta Geologica Sichuan 2016(4): 558-560
http://caod.oriprobe.com/articles/50438924/The_Triassic_Dinosaur_Footprints_in_China.htm
http://vip.hnadl.cn/article/detail.aspx?id=670860392


China is one of countries rich in dinosaur footprints in the world. The most of dinosaur footprints are found in the Jurassic and Cretaceous strata, the Triassic dinosaur footprints are rare. The Late Triassic dinosaur footprints in Pengxian, Tianquan and Fushun, Sichuan are oldest dinosaur footprints in China in time. But thus far no Triassic dinosaur skeletons have been found in China. These Triassic dinosaur footprints are urgent to be researched due to relative rare in quantity, not very obvious characteristic and undefined classified location