While all birds are descended from dinosaurs, the mysterious cassowaryis thought to be more similar to ancient dinosaurs than most other birds. Large bodied with fierce claws, these flightless birds also have casques, a helmet-like structure atop the head, which many dinosaurs are believed to ha...
Are dingoes descended from wolves? Are kangaroos mammals or marsupials? Do dingoes howl? Are egg-laying mammals marsupials? Are meerkats marsupials? Were dinosaurs monotremes? Are any marsupials carnivores? Are hedgehogs monotremes? Are kangaroos placental mammals?
Archosaurs were one of the three infraclasses of diapsid reptiles. The group included Stegosauruses, Tyrannosaurus rexes, and...
Cardinals are very vocal birds and sing almost all year round. Their unique songs are a mix of warbles and whistles. Northern cardinals are rather good mimics as well, and can even copy the calls of other birds! These harmonious scarlet birds are also quite social. During the cold winter ...
That calamity - and other events-wiped out roughly three quarters of all species, including all pterosaurs and dinosaurs. But before their disappearance, pterosaurs enjoyed unequalled success. They flew into sunny skies before any other vertebrate. For 150 million...
Where do reptiles originate from? In addition to the living reptiles, there are many diverse groups that are now extinct, in some cases due to mass extinction events. In particular, the Cretaceous–Paleogene extinction event wiped out the pterosaurs, plesiosaurs, and all non-avian dinosaurs alon...
题目Dinosaurs disappeared 65 million years ago,so we don't really know what they sounded like.Of course,there are many movies with dinosaurs making all kinds of sounds.However,these sounds are just guesses that movie directors make about how dinosaurs sounded. A new discovery has...
Walk out of the twisting hallways of the museum and step into life climbing on to land. But before the age of the dinosaurs, there will be several more mass extinctions. One that wiped out 90% of all life on the planet. Permian-Triassic extinction: ~ 253 million years ago ...
Dinosaurs ruled the planet for millions of years,and they are generally believed to have gone extinct.But the reality is that modern versions of dinosaurs are all around us.Scientists have been exploring similarities between birds and dinosaurs; and new research shows that these two types of anima...