Photo: National Park Service, Fossil Butte National Monument
- Order
- Unknown
- Family
- Asineopidae
- Size
- About 6.6 cm / 2.6 in
A second mystery-fish species assigned to the family Asineopidae.
A. squamifrons is known as the “mystery fish” as it lacks identifiable traits to place it in an order. It was assigned its own family and has since been joined by Asineops sp. Asineops appears to have gone extinct in the middle Eocene.
Species text: National Park Service, Fossil Butte National Monument — Fossil Fish Species.