Search results
Sep 20, 2018 · All dinosaurs including Deluxe Edition dinosaurs.Sizes of T-Rex, Spinosaurus, Giganotosaurus, Ceratosaurus & Spinosaurus roar are updated.If you want to know...
- 26 min
- 63.7M
- World of Dinosaurs
Birds are avian dinosaurs, and in phylogenetic taxonomy are included in the group Dinosauria. 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 ...
Explore the amazing world of dinosaurs with stunning videos, from cute babies to epic battles. Learn about dinosaur history, fossils, extinction and more.
- Basic Dinosaur Facts
- Paleontology
- The Age of Dinosaurs
- Dinosaur Fossils and Fossilization
- Teeth, Footprints, and Feathers
- GeneratedCaptionsTabForHeroSec
Dinosaurs are a group of reptiles that have lived on Earth for about 245 million years.In 1842, the English naturalist Sir Richard Owen coined the term Dinosauria, derived from the Greek deinos, meaning “fearfully great,” and sauros, meaning “lizard.”Dinosaur fossils have been found on all seven continents.All non-avian dinosaurs went extinct about 66 million years ago.Paleontologistsare like detectives who examine the evidence that extinct animals left behind. Those clues to what dinosaurs were like are found in fossils—the ancient remains of an organism, such as teeth, bone, or shell—or evidence of animal activity, such as footprints and trackways. Everything we know about non-avian dinosaurs is based on fossil...
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. Contrary to what many people think, not all dinosaurs lived during the same geological period. Stegosaurus, for example, lived...
Paleontologists use fossil evidence preserved in ancient rock to discover how long-extinct animals lived and behaved.In most cases, a fossilized bone is actually a rock made out of minerals, with no trace of the original bone material.The discovery of dinosaur eggs and nests provided evidence for the behavior of some dinosaurs.By comparing the skulls of Protoceratopsof different ages (like in the image above), paleontologists can draw conclusions about how some dinosaurs grew.Most theropod dinosaurs, such as Tyrannosaurus, had teeth that were pointed, slightly curved backwards, and serrated. The sharp points pierced the meat, and the serrations helped slice it by catching and tearing muscle fibers. Meat eaters didn’t chop or grind their food; they swallowed chunks whole. Plant-eating dinosaurs had teeth of various shape...
Learn about dinosaurs, their fossils, and how paleontologists study them. Discover the diversity, evolution, and extinction of non-avian dinosaurs and their living descendants, birds.
Jul 31, 2019 · Explore the two leading theories for what killed the dinosaurs and other Cretaceous life 66 million years ago: a giant meteor impact or massive volcanic eruptions. Learn about the evidence, the debate, and the implications for climate change.
- Victoria Jaggard
- 4 min
Dinosaurier. Die Dinosaurier lebten vor etwa 225 Millionen Jahren auf der Erde – auch auf dem Gebiet des heutigen Deutschland. Sie waren ein Erfolgsmodell der Evolution und überlebten 170 Millionen Jahre lang, bis sie nach einem Meteoriteneinschlag ausstarben. Von Tobias Schlößer.
Learn about the diversity, evolution and extinction of dinosaurs, the group of mostly land-based animals that include birds. Find out how dinosaurs differ from other reptiles and pterosaurs, and what features make them dinosaurs.
