We don't know for sure what caused it but at the end of the Cretaceous there was a mass extinction in marine and terrestrial life. Some reptiles and early mammals survived, but dinosaurs, except for birds, of course, became extinct.
Some scientists believe that an increase in volcanic activity, together with the effects of the shifting continents, caused profound climate change on Earth, while others believe that a massive extraterrestrial object hit the planet. One such theory suggests that an asteroid crashed into Chicxulub in Mexico, throwing up a huge dust cloud that obscured the sun, triggering climatic changes.
Whatever the explanation, the age of the dinosaur was over. Or so they thought.
But it was not over, in time scientist would discover that the line between dinosaur and bird had so many similarities that birds would be considered dinosaurs, but just knock down to a size that's harmless.
The scientific consensus is that birds are a group of theropod dinosaurs that evolved during the Mesozoic Era. A close relationship between birds and dinosaurs was first proposed in the nineteenth century after the discovery of the primitive bird Archaeopteryx in Germany.
Firsts let's learn what a Theropod is
The theropod (meaning "beast-footed") dinosaurs are a diverse group of bipedal saurischian dinosaurs.
Also it has been said many times that Dinosaurs have shared many features with birds, so in a way that's one way to explain it.
Some scientists believe that an increase in volcanic activity, together with the effects of the shifting continents, caused profound climate change on Earth, while others believe that a massive extraterrestrial object hit the planet. One such theory suggests that an asteroid crashed into Chicxulub in Mexico, throwing up a huge dust cloud that obscured the sun, triggering climatic changes.
Whatever the explanation, the age of the dinosaur was over. Or so they thought.
But it was not over, in time scientist would discover that the line between dinosaur and bird had so many similarities that birds would be considered dinosaurs, but just knock down to a size that's harmless.
The scientific consensus is that birds are a group of theropod dinosaurs that evolved during the Mesozoic Era. A close relationship between birds and dinosaurs was first proposed in the nineteenth century after the discovery of the primitive bird Archaeopteryx in Germany.
Firsts let's learn what a Theropod is
The theropod (meaning "beast-footed") dinosaurs are a diverse group of bipedal saurischian dinosaurs.
Also it has been said many times that Dinosaurs have shared many features with birds, so in a way that's one way to explain it.
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