Fish Fossil - Knightia Eoceana

Fish Fossil - Knightia EoceanaDuring the Eocene, 40 50 million years ago, vast shoals of freshwater fish inhabited a large shallow inland sea across the American West. The herring like fish of the genus Knightia were far and away the most abundant freshwater fish during this era, and because of this they are one of the most frequently found vertebrate fossils on earth. Originating from the famed Green River Formation in Wyoming, fossils of Knightia eocaena and their close

vast shoals of freshwater fish inhabited a large shallow inland sea across the American West

The darker color is caused by differing conditions and impurities during formation that changed over time leaving the area closer to the crystal's surface lighter or more transparent

from fine crystal to botryoidal (spherical/nodular)

Chrysocolla is unique mineral prized as a precious stone since antiquity for use in jewelry as well as in goldsmithing

The “Benz” part of the name comes from the tip of some calcite crystals which have a clearly defined three-pointed star of pyrite

which is a brilliant mineral in the aragonite family known for its twinning crystalline structure and delicate form

One of the most widely recognized and unmistakable minerals

fluorite specimens have been prized since ancient times and are now among the most popular minerals in the collecting world

Use gloves and wash hands thoroughly

Rainbow or peacock pyrite is a much rarer form of pyrite named for the unmistakable and incredibly vibrant rainbow-colored iridescence it displays

This preglabellar ring (head shield) is covered in many sensory pits which may have held hairlike features when the trilobite was alive

These incredible specimens of natural uncut aquamarine from Mount Little Xuebaodoing in Sichuan