Category
page 1Paleogene geology of Wyoming
Hell Creek Formation
geological formation
Machaeroides
Machaeroides ("dagger-like") is an extinct genus of sabre-toothed predatory placental mammals from the extinct subfamily Machaeroidinae within the extinct family Oxyaenidae, that lived in North America (Wyoming) from the early to middle Eocene.
Green River Formation
Rock formation
Yellowstone hotspot
hotspot