Background on Green River Formation
The Green River Formation is type of a formation known as a lagerstatten. According to Bottjer, a lagerstatten is a German word that means “lode places” or “motherlode.” It is a fossil locality highly remarkable for their diversity and quality of preservation, a spectacular rarity (1).
Here is just an example of the massive amounts of specimens!
Fossils (1, 3)
There are some 60 vertebrate taxa that have been described from the formation, as well as abundant invertebrates and plants.
Map of the Green River Formation (2)
The Green River Formation cuts through the states of Wyoming, Utah, and Colorado and was formed as part of an uplifting of the Rocky Mountains.
The lakes that make up this exquisite find are Fossil Lake, Lake Gosiute, and Lake Uinta. They are all varied in depth and expanse, but all provide a keen importance to the geological makeup of the area (3).
- Bottjer 45