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[dinosaur] Basal Jurassic tyrannosauroids (free pdf) + dinosaurs tracks in Lebanon + more

Ben Creisler

Some recent (and not so recent) papers that have not been mentioned yet on the DML:

With free pdf:

Changyu YUN (2016)
A review of the basal tyrannosauroids (Saurischia: Theropoda) of the Jurassic Period.
Volumina Jurassica 14(1): 159-164
DOI: 10.5604/01.3001.0009.4021

The well supported clade Tyrannosauroidea represents one of the most basal coelurosaurian theropods. Given that current fossil records of earliest coelurosaur theropods are extremely scarce, basal-most tyrannosauroid materials are key to understanding the origin and diversification of coelurosaurs. Here, I present a brief overview of currently known basal tyrannosauroids of Jurassic age, discussing their systematics and distribution. The currently oldest known Jurassic tyrannosauroids are from Europe continent, possibly suggesting the European origin of the superfamily.


Raymond Gèze, Isabelle VeltzJean-Claude Paicheler, Bruno Granier, Roland Habchi, Dany Azar & Sibelle Maksoud (2016)
Preliminary report on a dinosaur tracksite from Lower Cretaceous strata in Mount Lebanon.
Arabian Journal of Geosciences 9:730
DOI: 10.1007/s12517-016-2759-1

A dinosaur tracksite was discovered in Batha on the side of the road from Harissa to Ghosta (Keserwan, Lebanon). About ten trackways are exposed at the top of two beds of Lower Cretaceous limestones over an area of approximately 1000 m2. These footprints were probably made by at least two dinosaur species, Sauropoda and either Theropoda or Ornithopoda. The site, which is the first record from Lebanon, should be protected to allow further scientific investigations.


Jihwan Park and Hyeong-Dong Park (2016)
The effect of frost weathering at the dinosaur tracksite in Seoyu-ri, Hwasun, Korea.
Bulletin of Engineering Geology and the Environment (advance online publication)
DOI: 10.1007/s10064-016-0970-7

Cultural monuments and geological heritage sites composed of natural stone are severely affected by frost weathering in cold regions or during the winter season in mid-altitude regions. The effect also occurs at the dinosaur tracksite in Seoyu-ri, Hwasun, Korea, which is not sheltered. To assess the influence of frost weathering on the tracksite, freeze–thaw experiments were carried out in the laboratory up to 100 cycles, simulating geological and meteorological conditions of the site. The variation on physical properties were measured at a core scale as weathering progressed. The decreases in dry weight, P- and S-wave velocity, and elastic modulus, and the increase in absorption rate and Poisson’s ratio showed the physical deterioration of the specimens. The microstructural properties were also measured using micro-computed tomography (micro-CT) images as weathering progressed. The variation on porosity (especially open porosity), pore size distribution, local thickness, and crack orientation showed the propagation and expansion of the pores and microcracks in rock specimens at a pore scale. Because every measurement was performed using non-destructive methods, the variation on the same specimens can be analyzed continuously. The results showed that frost weathering can cause damage to the tracksites. This research, therefore, suggests the construction of a shelter to maintain the temperature of the tracksite and to prevent groundwater seepage. This research can be applied to assess the effects of frost weathering at other cultural stone heritage or geological heritage sites.


Suparna Goswami, Elizabeth Gierlowski-Kordesch & Parthasarathi Ghosh (2016)
Sedimentology of the Early Jurassic limestone beds of the Kota Formation: record of carbonate wetlands in a continental rift basin of India.
Journal of Paleolimnology (advance online publication)
DOI: 10.1007/s10933-016-9918-y

Pranhita–Godavari is one of the major rift basins of peninsular India that was actively filled when the Indian landmass was a part of Gondwanaland, the southern supercontinent. The basin-fill succession of this continental rift basin is characterized mainly by fluvial sandstones and mudstones. In the Early Jurassic this basin hosted a freshwater carbonate deposit characterized by a 20–30 m thick alternation of laminated and massive limestones. The remains and traces of land vertebrates, invertebrates and plants suggest that this limestone serves as one of the rare examples of freshwater carbonate depositing environment within a continental rift basin. The limestone interval is characterized by repeatedly stacked meter-thick laminated and massive carbonate-rich sediments. These sediments are classified into two facies associations representing two main depositional domains of a rift-bound, large, freshwater wetland system: a shallow lacustrine palaeoenvironment and a palustrine paleoenvironment. The former palaeoenvironment is characterized by laminated carbonate facies and the later one is by mottled, nodular and bioturbated limestone. Repeated influx of siliclastics by surface flow into ca-rich water bodies produced the laminated carbonates. Whereas, subaerial modifications and reworking of primary deposits resulted in palustrine carbonates. Vertebrate tracks, evidences of rooting, and the absence of deep basinal facies in this succession along with repetitive stacking of sediments formed in subaqueous and subaerial conditions indicates that the depositional environment was more akin to a modern wetland. This Jurassic carbonate wetland developed in the rift basin when the watershed on the adjacent rift shoulder exposed Proterozoic carbonate rocks that provided the ions necessary for carbonate accumulation. The repeated stacking of meter-scale lacustrine and palustrine carbonates in this limestone reflect long-periodicity fluctuations in water level possibly related to subsidence events of the rift valley.


Jiang Yang, Qian Maiping, Xing Guangfu & Jiang Yangen (2016)
Zircon U-Pb chronology of dinosaur skeleton and egg fossil strata in the Tiantai Basin, Zhejiang Province.
Journal of Stratigraphy 2016 3: 272-277 (in Chinese)

[Very rough translation (did not find an official English translation)]

In order to determine the dinosaur skeleton and egg fossil strata in the Tiantai Basin, Tiantai County, Zhejiang Province, crystaline tuff interlayers were selected in the red beds of the Laijia Formation and Chichengshan Formation where dinosaur bones and egg fossils were present, with precise zircon SHRIMP and LA-ICP-MS U-Pb dating. The results show that the diagenetic ages of the upper and lower Chacheng tuffs are 100 ± 1 Ma and 92 ± 1 Ma, respectively, indicating that the Laijia Formation was deposited in the Late Cretaceous to Early Cretaceous, while the Chichengshan Formation was formed in the Late Cretaceous, and the continuous deposition of the two groups formed the stratum of dinosaur skeleton and egg fossil in the Tiantai Basin. It is inferred that the formation age of the lower Tong Formation in the integrated contact with Laijia Formation is earlier (> 100 Ma) in the Late Cretaceous, while the dinosaur extinction in the Tiantai basin was later than that in the Late Cretaceous (<92 Ma). The above results can also be used to carry out stratigraphic correlation between Tiantai Basin and other eastern basins.


Also, a recent book:

M. Gabriela Mángano & Luis A. Buatois (2016) [editors]
The Trace-Fossil Record of Major Evolutionary Events: Volume 2: Mesozoic and Cenozoic
Topics in Geobiology 40 2016
ISBN: 978-94-017-9596-8 (Print) 978-94-017-9597-5 (Online)

The Front Matter can be downloaded as a free pdf with summaries of the different chapters.  The Index can also be downloaded for free.

A number of the chapters pertain to trace fossils of Mesozoic vertebrates, as well as to Mesozoic environments.

Colin Barras & Richard J. Twitchett (2016)
The Late Triassic Mass Extinction Event. 

Luis A. Buatois, Noelia B. Carmona, H. Allen Curran, Renata G. Netto, M. Gabriela Mángano, Andreas Wetzel (2016)
The Mesozoic Marine Revolution.

Massimo Bernardi , Fabio Massimo Petti, Laura Piñuela, José Carlos García-Ramos, Marco Avanzini & Martin G. Lockley (2016)
The Mesozoic Vertebrate Radiation in Terrestrial Settings.


Luis A. Buatois , Conrad C. Labandeira, M. Gabriela Mángano, Andrew Cohen & Sebastian Voigt (2016)
The Mesozoic Lacustrine Revolution.


Conrad C. Labandeira , Francisco J. Rodríguez-Tovar &  Alfred Uchman (2016)
The End-Cretaceous Extinction and Ecosystem Change.