These, and all other non-avian dinosaurs became extinct at least 65 million years ago at the end of the Cretaceous Period. Is a chicken a dinosaur? So, are chickens dinosaurs? No –the birds are a distinct group of animals, but they did descend from the dinosaurs, and it's not too ...
When non-avian dinosaurs went extinct, why did mammals, instead of birds, fill their ecological niches? Why are birds classified as reptiles? Why were there no large mammals around when dinosaurs occupied the land? Why were there no large mammals around when the dinosaurs occupied the land?
When non-avian dinosaurs went extinct, why did mammals, instead of birds, fill their ecological niches? As you may know, the blue whale is an endangered species. A) What are some ways that the blue whale can be helped, include any laws or ...
Note:It is very difficult to figure out the exact moment at which the animal became extinct, and therefore, the concerned organizations have to wait for a significant period after the last sighting to declare it extinct. Simultaneously, thorough research is carried out to ascertain whether the sp...