Cretaceous - Wikipedia
WEBThe Cretaceous (IPA: / krɪˈteɪʃəs / krih-TAY-shəss) [ 2 ] is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic.
Cretaceous Period | Definition, Climate, Dinosaurs, & Map
WEBAug 28, 2024 · Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. It began 145 million years ago and ended 66 million years ago and featured the extinction of the dinosaurs at the end of the period.
Interactive Map "Ancient Earth" Shows Earth Over Millions of Years
WEBSep 13, 2020 · The interactive map Ancient Earth allows users to track their hometown's location on Earth's surface over millions of years. New York City pinned on the Ancient Earth interactive map set to 750 million years ago.
Timeline of the evolution of life on Earth | New Scientist
WEBJul 14, 2009 · 70 million years ago. Grasses evolve – though it will be several million years before the vast open grasslands appear. 66 million years ago
Cretaceous period: Animals, plants and extinction event
WEBJul 26, 2022 · The Cretaceous period lasted approximately 79 million years, and ended with a major extinction event about 66 million years ago.
The Cretaceous Period: What was Earth like before dinosaurs went ...
WEBThe Cretaceous is a geological period that began 145 million years ago and ended 66 million years ago. It is the last period in the Mesozoic Era. It comes after the Jurassic Period and before the Paleogene - the first period of the Cenozoic Era, our current era.
Ancient Shell Has Revealed Exactly How Much Shorter Days Were 70 ...
WEBMar 10, 2020 · Analysis of a fossilised Cretaceous-era bivalve shell has revealed that our planet's days were half an hour shorter 70 million years ago. In turn, knowing this can now help scientists to more accurately piece together the rate at which the Moon is slowly moving away from our planet.
Ankylosaurus | Size, Diet, & Facts | Britannica
WEBAnkylosaurus, (genus Ankylosaurus), armoured ornithischian dinosaurs that lived 70 million to 66 million years ago in North America during the Late Cretaceous Period. Ankylosaurus is a genus belonging to a larger group (infraorder Ankylosauria) of related four-legged heavily armoured herbivorous.
Cretaceous Period—145.0 to 66.0 MYA - U.S. National Park Service
WEBApr 27, 2023 · The main contender for the Cretaceous mass extinction event is a huge asteroid striking Earth about 66 million years ago. Eleven other impact structures are known from the Cretaceous, but none rival the terminal event of the Cretaceous.
Ancient shell shows days were half-hour shorter 70 million years ago
WEBMar 9, 2020 · The new study analyzed a single individual that lived for over nine years in a shallow seabed in the tropics—a location which is now, 70-million-years later, dry land in the mountains of Oman.