Green River Formation

56 – 34 million years old


In this section of our fossils and minerals web shop we sell fossil fish. These were found in the United States. To be more precise, these fossil fish were found in the so-called Green River Formation. The formation spans about a period of six million years in which 1 year is a combination of a light and dark layer. This is also called a varve. The Green River Formation and therefore also the fossil fish have an age of between 53.5 and 48 million years.