Phareodus testis | Green River Formation | Wyoming Amethyst " represent an extinct lineage

" represent an extinct lineage of aquatic arthropods classified within the order Eurypterida

Late Carboniferous (~305 myo)

size: 7" x 9"

The Muonionalusta meteorite is one of the oldest known meteorites on Earth - estimated at about 4

These spines likely served as protection against predators like fish and cephalopods during the Devonian "Age of Fishes

Phareodus testis | Green River Formation | Wyoming Amethyst " represent an extinct lineagePhareodus testis Eocene (51. 98 Million Years Ago) Private Quarry, Green River Formation, Wyoming, USA Obtained from the collection of Dr. William Rieger Specimen approx. size: 5. 5" Matrix approx. size: 9. 75" x 8. 75" In the ancient waters of Fossil Lake, a formidable predator roamed. The Phareodus testis, a smaller but equally fascinating cousin of Phareodus encaustus. Both species boasted striking features, including pointy teeth and an impressive