Irdin Manha Formation, Geological formation in Inner Mongolia, China.
The Irdin Manha Formation is a geological layer from about 50 million years ago composed of sandy, clayey, and gravelly material. It spreads across an area south of the Mongolian border and contains well-preserved fossils of vertebrates from that period.
The layer formed during the Eocene epoch, a time of warm climate and rich animal life in the region. Scientists began exploring the area in the 1920s and discovered a large number of animal bones and teeth.
The site helps scientists understand the animals that lived here millions of years ago through the remains preserved in the rock layers. These fossils show visitors and researchers what early mammal life looked like in this region.
The location is in a remote area between two towns and requires good preparation for a visit. The best time to explore is during warmer months when weather conditions are more stable.
A complete skull of an extinct predator was found at this location, a discovery made nowhere else in the world. This rare find gave researchers insights into an animal previously known only from scattered bones.
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