cenozoic era
41Olympic-Wallowa Lineament — Location of the Olympic Wallowa Lineament. Is the OWL an optical illusion? The Olympic Wallowa lineament (OWL) – first reported by cartographer Erwin Raisz in 1945 [1] on a relief map of the continental United States – is a physiographic feature… …
42Cretaceous–Tertiary extinction event — Artist s rendering of bolide impact Badlands nea …
43Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …
44Age of Mammals — noun approximately the last 63 million years • Syn: ↑Cenozoic, ↑Cenozoic era • Instance Hypernyms: ↑era, ↑geological era • Part Holonyms: ↑Phanerozoic, ↑Phanerozoic eon, ↑ …
45Dinosaur — For other uses, see Dinosaur (disambiguation). Dinosaurs Temporal range: Late Triassic–Late Cretaceous, 231.4–65.5 Ma …
46Colorado Plateau — A map of the Colorado Plateau. The …
47Geology of the Grand Teton area — The geology of the Grand Teton area consists of some of the oldest rocks and one of the youngest mountain ranges in North America. The Teton Range, mostly located in Grand Teton National Park, started to grow some 9 million years ago. An older… …
48New Zealand geologic time scale — While also using the international Geologic time scale, many nations especially those with isolated and therefore non standard prehistories use their own system of dividing geologic time into epochs and faunal stages. In New Zealand, these epochs …
49Jurassic — Period 199.6–145.5 million years ago …
50Diatom — For a molecule of two atoms, see Diatomic molecule. Diatoms Marine diatoms Scientific classification Domain …
