Udurchukan Formation, Geological formation in Amur Region, Russia
The Udurchukan Formation is a geological unit in Amur Oblast composed of stacked layers of conglomerate, mudstone, and diamictite. The rock sequence is visible at several documented sites and displays distinct depositional patterns from ancient sedimentary environments.
This formation developed during the Maastrichtian age of the Late Cretaceous, spanning approximately 70 to 66 million years ago. It reflects the depositional conditions that shaped the Far Eastern landscape during the final phase of the dinosaur era.
Scientists from multiple research institutions conduct extensive paleontological studies at the formation sites in Kundur and Blagoveschensk localities.
The exposures are located at multiple sites across the region, chiefly near Kundur and Blagoveschensk. Access conditions can vary depending on seasonal weather and local site management.
The formation preserves remains of several Late Cretaceous dinosaur species including Amurosaurus and Kerberosaurus. These discoveries make it an important window into the ancient animal life that inhabited the Far Eastern region during that era.
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