Knightia Fish white ammonite which averages a mere 7

which averages a mere 7 meters in length

apart from being an aquatic mollusc) from the extinct Cymatoceras sakalavus

These small trilobites are good entry level specimens

hence its name

With field plaster to the back of the piece

Knightia Fish white ammonite which averages a mere 7A single fossilised Knightia fish in a limestone matrix, found in Fossil Lake, Wyoming, USA. The unusual chemistry of this region has led to Fossil Lake having the highest concentration of fish fossils anywhere in the world. This species is thought to be distantly related to modern day herrings and sardines. Eocene age, circa 50 million years old. Each full fish is approximate 6cm. Matrix (bed rock) size 10cm x 8cm x 0. 5cm Measurements are