1 Talk California Edit Fossil Record California is a state of the United States known for its productive fossil sites. This article is a stub. You can help Fossil Wiki by expanding it. Read more The Round Mountain Silt Formation, more commonly known as Sharktooth Hill, is a geologic... Round Mountain Silt Formation Andrews Mountain Member is a geologic member located in California and Nevada. It dates back to... Andrews Mountain Member Related Categories Categories: Article stubs | California Add category