Bear Gulch Limestone, Paleontological site in central Montana, United States
The Bear Gulch Limestone consists of multiple limestone outcrops northeast of the Big Snowy Mountains, containing extensive marine fossil deposits.
The formation dates back 323 million years to the Mississippian period, preserving a diverse ecosystem from when the region was located near the equator.
Scientists worldwide study this location to examine the evolution of marine species and understand the relationships between ancient fish morphology and habitat.
Access to the Bear Gulch Limestone requires special permits and coordination with research institutions due to its protected status as a scientific site.
The limestone deposits contain fossils of one of the oldest known lampreys and numerous unusual chondrichthyans preserved with internal organs intact.
Location: Montana
GPS coordinates: 46.95000,-109.00000
Latest update: June 24, 2025 21:31
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