31/05/2026
Fossil Fish Spotlight: Notogoneus 🐟
From the world-famous Green River Formation, this unusual fossil fish is one of the rarer finds from one of the most important fossil sites on Earth.
Unlike smaller schooling fish like Knightia or fast predators such as Mioplosus, Notogoneus was a larger, bottom-dwelling species that could grow up to 3 feet long. With its long, torpedo-shaped body and downturned mouth, it likely fed along the lakebed on small invertebrates and plant material.
These fossils date back to the Eocene, over 50 million years ago, when the region was covered by warm, subtropical lakes.
What makes the Green River Formation so special is the incredible preservation, fish were rapidly buried in fine, oxygen-poor sediment, preserving them in astonishing detail. Many look as if they died just yesterday 🐟✨
Rare, unusual & beautifully preserved, Notogoneus is a true snapshot of an ancient world 🌎