Knightia Alta

Plaque
9.5"/24.1cm wide
5.5"/14cm height

Fish
5"/12.6cm long

Weight
2Kg

Description

Fine Knightia Fish plaque, the whole fish specimen is intact and positioned well, displaying beautifully the fins, scales and vertebra, the head of the fish is also very distinct.

With good state of preservation, this plaque specimen is one of few available, as fossil fish plaques of this quality are declining more and more every year, on the fossil sites, and in the Fossil trade

Genus

Knightia Alta Fossil Fish sp.

Other Names

Fossil Herring

Geological Age

Cenozoic Era Tertiary; Paleogene Sub-Periods, Early [Lower] Eocene Epoch, Ypresian Stage, around 48-55 million years ago

Location

Green River Formation-18 inch layer Fossil Lake; Kemmerer, Wyoming

History of the Green River Formation

The Green River Formation represents one of the largest documented accumulations of sedimentary rock in the world and dates back 50 million years. It covers an area of more than 25,000 square miles and averages about 2000 feet in thickness. These lakes were formed by geologic events that uplifted the Rocky Mountains in early times. The climate was much different than the desert like climate of today. It was similar (subtropical) to the present climate of the Gulf Coast and southern Atlantic areas of the US. The first record of a fossil fish discovered in the Green River Formation was in 1856. All of the fossil fish, stingrays, palm fronds and others displayed on our web site come from the Fossil Lake area near Kemmerer, Wyoming USA. Found at the 7200 foot elevation this area has been commercially mined since the late 1800 hundreds