Dinosaurs are a group of reptiles that have lived on Earth for about 245 million years. … Dinosaur fossils have been found on all seven continents. All non-avian dinosaurs went extinct about 66 million years ago. There are roughly 700 known species of extinct dinosaurs.
Do dinosaurs exist?
Other than birds, however, there is no scientific evidence that any dinosaurs, such as Tyrannosaurus, Velociraptor, Apatosaurus, Stegosaurus, or Triceratops, are still alive. These, and all other non-avian dinosaurs became extinct at least 65 million years ago at the end of the Cretaceous Period.
Did you know facts about dinosaurs?
Most dinosaurs had very small brains and were about as clever as modern reptiles.
- The word dinosaur comes from the Greek language and means ‘terrible lizard’. …
- Dinosaurs were the biggest animals ever to have walked on earth.
What killed the dinosaurs?
As originally proposed in 1980 by a team of scientists led by Luis Alvarez and his son Walter, it is now generally thought that the K–Pg extinction was caused by the impact of a massive comet or asteroid 10 to 15 km (6 to 9 mi) wide, 66 million years ago, which devastated the global environment, mainly through a …
Did dinosaurs exist all over the world?
Dinosaurs lived on all of the continents. … During the 165 million years of dinosaur existence this supercontinent slowly broke apart. Its pieces then spread across the globe into a nearly modern arrangement by a process called plate tectonics.
Are sharks dinosaurs?
Today’s sharks are descended from relatives that swam alongside dinosaurs in prehistoric times. … It lived just after the dinosaurs, 23 million years ago, and only went extinct 2.6 million years ago.
What was before dinosaurs?
The age immediately prior to the dinosaurs was called the Permian. Although there were amphibious reptiles, early versions of the dinosaurs, the dominant life form was the trilobite, visually somewhere between a wood louse and an armadillo. In their heyday there were 15,000 kinds of trilobite.
What if dinosaurs never went extinct?
“If dinosaurs didn’t go extinct, mammals probably would’ve remained in the shadows, as they had been for over a hundred million years,” says Brusatte. … Gulick suggests the asteroid may have caused less of an extinction had it hit a different part of the planet.
What are 5 facts about dinosaurs?
Top 10 Facts About Dinosaurs
- Dinosaurs were around millions of years ago! …
- Dinosaurs were around in the Mesozoic Era or “The Age of Dinosaurs”. …
- There were more than 700 species. …
- Dinosaurs lived on all continents. …
- The word dinosaur came from an English palaeontologist. …
- One of the biggest dinosaurs was the Argentinosaurus.
Are dinosaurs extinct?
Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years.
Will humans go extinct?
Humanity has a 95% probability of being extinct in 7,800,000 years, according to J. Richard Gott’s formulation of the controversial Doomsday argument, which argues that we have probably already lived through half the duration of human history.
What came after dinosaurs?
The good old days. About 60 million years ago, after ocean dinosaurs went extinct, the sea was a much safer place. Marine reptiles no longer dominated, so there was lots of food around, and birds like penguins had room to evolve and grow. Eventually, penguins morphed into tall, waddling predators.
Who found the first dinosaur?
Megalosaurus is believed to be the first dinosaur ever described scientifically. British fossil hunter William Buckland found some fossils in 1819, and he eventually described them and named them in 1824.
Who came first dinosaurs or Adam and Eve?
The first has dinosaurs, alongside Adam and Eve, living in harmony. The ferociously fanged T. rex is likely to be a vegetarian.
What was a dinosaurs lifespan?
Early estimates of 300-year lifespans for the largest sauropods were based on comparisons with crocodiles and turtles, which have much slower metabolisms. The consensus is now that Apatosaurus and Diplodocus dinosaurs probably only lived for 70 or 80 years, which is about the same as an elephant today.
What country did dinosaurs live?
A question that is often frequently asked is “Where did dinosaurs live?”. A simple answer to that question is that dinosaurs lived all over the Earth. They lived in North America, South America, Australia, Europe, Asia, Africa and even Antarctica. They lived on the ground, in the skies and in the seas.