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DINOSAURS

About dinosaurs?

 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. 


Why did they go extinct?

The most widely accepted theory as to why the dinosaurs disappeared is due to an asteroid. It collided with the Earth and sent a massive cloud of dust, debris, and particles into the atmosphere. This cloud travelled around the planet, blocking out the sun and causing plants and animals to die.


Our Dinosaurs

“As a kid, I knew all about dinosaurs. It’s one of those tragedies that I’ve forgotten what dinosaurs are cool.”


GIGANTASURUS

Giganotosaurus is a genus of theropod dinosaur that lived in what is now Argentina, during the early Cenomanian age of the Late Cretaceous period, approximately 99.6 to 95 million years ago. The holotype specimen was discovered in the Candeleros Formation of Patagonia in 1993 and is almost 70% complete. 


VELOCIRAPTOR

Velociraptor is a genus of small dromaeosaurid dinosaurs that lived in Asia during the Late Cretaceous epoch, about 75 million to 71 million years ago. Two species are currently recognized, although others have been assigned in the past. The type species is V. mongoliensis, named and described in 1924.


THERIZINOSAURUS

Therizinosaurus is a genus of very large Therizinosaurus that lived in Asia during the Late Cretaceous period in what is now the Nemegt Formation around 70 million years ago. It contains a single species, Therizinosaurus cheloniformis.


Did you know?

Stegosaurus had a brain the size of a walnut.


THE 6 MAIN DINOSAUR TYPES

Ornithopods, Sauropods, Stegosaurs, Ceratopsians, Theropods and Ankylosaurs.

THANK YOU!

Elaine Aine and Elijah Mugambwa, Yr.6 Parakeet




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