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[dinosaur] Dinosaurs of the Gobi + bird/maniraptoran femur from Spitsbergen (free pdfs)





Ben Creisler
bcreisler@gmail.com


New papers in open access:


Free pdfs:

Philip J. Currie (2016)
Dinosaurs of the Gobi: Following in the footsteps of the Polish-Mongolian Expeditions. 
Palaeontologia Polonica 67: 83–100.
doi: 10.4202/pp.2016.67_083
http://palaeontologia.pan.pl/PP67/Currie.pdf

The Polish-Mongolian Palaeontological Expeditions collected many partial and complete dinosaur skeletons from the Nemegt Formation of Mongolia between 1964 and 1971. Under the leadership of Zofia Kielan-Jaworowska, the specific localities of fifty of these quarries were recorded on published maps. In recent years, more than half of these quarries have been relocated for the collection of additional data and even missing parts of some specimens. They have been included in a database that contains more than six times the original number of specimens. The larger, more precise database will ultimately be useful for identifying and interpreting the stratigraphic and geographic distributions of specific dinosaur taxa. However, at this stage it only confirms a preservational bias that favors the recovery ofspecimens of the tyrannosaurid Tarbosaurus with greater frequency than any herbivorous dinosaurs.


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Jorn H. Hurum, Aubrey J. Roberts, Gareth J. Dyke, Sten-Andreas Grundvag, Hans A. Nakrem, Ivar Midtkandal, Kasia K. Œliwińska, and Snorre Olaussen (2016)
Bird or maniraptoran dinosaur? A femur from the Albian strata of Spitsbergen. 
Palaeontologia Polonica 67: 137–147
doi: 10.4202/pp.2016.67_137
http://palaeontologia.pan.pl/PP67/Hurum.pdf



The first known fossil vertebrate found in the Lower Cretaceous of Spitsbergen (Svalbard, Arctic Norway) is presented and described. The specimen, a femur, was collected from the Zillerberget member of the Carolinefjellet Formation at Schönrockfjellet in 1962 and was recently re-discovered. The bone is referred to ?Avialae based on a combination of characters, including extreme thinness of the cortex, a well-developed head, and the presence of a patellar sulcus. From biostratigraphic analysis, it is demonstrated that the bone comes from the lower part of the middle Albian. This find is important because the Early Cretaceous fossil record of Avialae remains poorly documented in most parts of the World and is non-existent in Arctic strata. A general overview of the geology and stratigraphy of the Lower Cretaceous in Spitsbergen is presented in order to provide context for the fossil occurrence, with a particular focus on the Aptian and Albian sedimentary system and with the first-ever report on the entire stratigraphy on the east face of Schönrockfjellet.