Editing Protoceratops (section)

===Fighting Dinosaurs===
[[File:'Fighting dinosaurs'Tugrugeen Shireh, Gobi Desert, 1971.jpg|thumb|left|Fossil of the Fighting Dinosaurs as found in the field, 1971]]
The [[Fighting Dinosaurs]] specimen preserves a ''Protoceratops'' (MPC-D 100/512) and ''Velociraptor'' (MPC-D 100/25) fossilized in combat and provides an important window regarding direct evidence of predator-prey behavior in non-avian dinosaurs.<ref name=Jaworowska1972>{{cite journal|last1=Kielan-Jaworowska|first1=Z.|last2=Barsbold|first2=R.|date=1972|title=Narrative of the Polish-Mongolian Palaeontological Expeditions, 1967–1971|journal=Palaeontologia Polonica|volume=27|pages=1–12|url=http://www.palaeontologia.pan.pl/Archive/1972-27_5-13_1-2.pdf}}</ref><ref name=Barsbolld1974/> In the 1960s and early 1970s, many Polish-Mongolian paleontological expeditions were conducted to the Gobi Desert with the objective of fossil findings. In 1971, the expedition explored several localities of the Djadokhta and [[Nemegt Formation|Nemegt]] formations. During fieldwork on 3 August several fossils of ''Protoceratops'' and ''Velociraptor'' were found at the Tugriken Shire locality (Djadokhta Formation) including a block containing one of each. The individuals in this block were identified as a ''P. andrewsi'' and ''V. mongoliensis''. Although the conditions surrounding their burial were not fully understood, it was clear that they died simultaneously in a struggle.<ref name=Jaworowska1972/>

The specimen, nicknamed the "Fighting Dinosaurs", has been examined and studied by numerous researchers and paleontologists, and there are various opinions on how the animals were buried and preserved altogether. Though a drowning scenario has been proposed by Barsbold,<ref name=Barsbolld1974/> such a hypothesis is considered unlikely given the arid paleoenvironments of the Djadokhta Formation. It is generally thought that they were buried alive by a sandstorm or a collapsed [[dune]].<ref name=Osmolska1993/><ref name=Unwin1995/><ref name=Barsbold2016/>