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Learn about the three periods of the Mesozoic Era when dinosaurs evolved and became diverse. Explore the climate, vegetation and animals that shaped the prehistoric world.
- What Killed The Dinosaurs
The fossil record shows that for the first 175 million years...
- Late Triassic Dinosaurs
15 dinosaurs from the Late Triassic. Chindesaurus...
- Dinosaurs From The Late Cretaceous Period
Explore dinosaurs from the Late Cretaceous in the Natural...
- What Killed The Dinosaurs
Jun 21, 2023 · Dinosaurs roamed Earth for millions of years, during a major geologic era known as the Mesozoic. Fossils, scientific discoveries and tireless research efforts have gradually unveiled the mesmerizing tapestry of the dinosaur timeline.
- Sean Mowbray
Dinosaurs are a diverse group of reptiles [ note 1 ] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research.
- Boundaries
- Life and Climate
- Extinctions
English geologist John Phillips, the first person to create the global geologic timescale, first coined the term Mesozoic in the 1800s. Phillips found ways to correlate sediments found around the world to specific time periods, said Paul Olsen, a geoscientist at the Lamont-Doherty Earth Observatory at Columbia University in New York. The Permian-Tr...
The Mesozoic era began roughly around the time of the end-Permian extinction, which wiped out 96 percent of marine life and 70 percent of all terrestrial species on the planet. Life slowly rebounded, eventually giving way to a flourishing diversity of animals, from massive lizards to monstrous dinosaurs. The Triassic period, from 252 million to 200...
The Mesozoic era was bookended by two great extinctions, with another smaller extinction occurring at the end of the Triassic period, Olsen said. Around 252 million years ago, the end-Permian extinction wiped out most life on Earth over about 60,000 years, according to a February 2014 study in the journal Proceedings of the National Academy of Scie...
The prehistoric reptiles known as dinosaurs arose during the Middle to Late Triassic Period of the Mesozoic Era, some 230 million years ago. They were members of a subclass of reptiles called the...
Dec 3, 2021 · Learn about the Mesozoic Era, when dinosaurs ruled the Earth for 186 million years. Discover how volcanism, climate change and continental drift shaped the evolution and extinction of these prehistoric creatures.
People also ask
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What is the age range of dinosaurs?
The Age of Dinosaurs The earliest known dinosaurs appeared during the Triassic Period (approximately 250 to 200 million ago). Dinosaurs evolved into a very diverse group of animals with a vast array of physical features, including modern birds.
