A new fossil discovery in the Gobi Desert of Mongolia shows that some dinosaurs nested in colonies. 15 nests and 50 eggs, all similar in size and shape and unusually well-preserved, were found tied together by a single geologic marker, meaning they could be attributed to a single nesting season.
Pebble Island, one of the Falkland Islands, hosts an expansive nesting colony of imperial shag birds. New evidence proves that some dinosaurs nested in colonies during the Upper Cretaceous.A new fossil discovery in the Gobi Desert of Mongolia shows that some dinosaurs nested in colonies. 15 nests and 50 eggs, all similar in size and shape and unusually well-preserved, were found coated in the same distinct sediment layer, meaning they could be attributed to a single nesting season.
A dinosaur nest and egg clutch is fossilized in the Javkhlant Formation in Mongolia. The thin dark red sediment bed connects 15 nests.Scientists from the University of Tsukuba in Tsukuba, Japan published their findings inon July 5, 2019, describing the undisturbed nesting site and the Upper Cretaceous aged Javkhlant Formation. A single marker bed, consisting of red-colored fine-grained sediment, conformably overlies the older tan-colored bed beneath it.
This is not the only indication that dinosaurs led social and cooperative lives. Other fossils from the same area have revealed three adolescent dinosaurs roosting together at the time of their death. The fossil shows three dinosaurs in a unique position, much like that of a sleeping goose or emu, with their abdomen on the ground atop folded legs with their long necks and heads folded back on their bodies. It seems that the dinosaurs were all sleeping closely huddled together.
These exciting revelations support a theory of complex social and reproductive behavior of theropod dinosaurs, which helps reconstruct the paleoecology and lifecycles of organisms living on Earth over 65 million years ago. I am a geoscience explorationist by trade, geologist, biologist and chemist by education, and a marine researcher and outdoor enthusiast by choice. My areas of expertise...
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