over hundreds of years. since the cavemen because of woolly mammoths were mammals .
No mammals existed in the Ordovician
No, dinosaurs existed before mammals. Reptiles and amphibians existed as long ago as 359.2 million years ago, while the first mammals didn't appear until 251 millions years ago.
mammals
How long has the nation of Tibet Existed?
If they existed, they probably would be. Horses tend to be mammals.
If mermaids existed (which they don't) they would presumably be mammals. At least, most depictions of mermaids show them with obvious mammalian characteristics (specifically, obvious human characteristics; most mammals do not have large, permanent breasts).
Santa has existed for as long as people have believed in him... many hundreds of years.
If mermaids existed a common depiction shows them with hair and with breasts so they are mammals which, by default, would make them animals as well since mammals are animals.
Mermaids, if they existed, would likely be classified as mammals because they have a human-like upper body believed to have lungs for breathing air. Their fish-like tail would not necessarily categorize them as fish, as some mammal species also have tails.
No, sugar did not cause slavery. Slavery existed long before the United States existed, or the Americas were discovered by Europeans. In fact, slavery existed long before the European countries existed.
Evolutionary biologists believe that reptiles existed before mammals, and that mammals evolved from reptiles. Reptiles do not have a cerebral cortex in their brains, but mammals do, therefore, in evolutionary terms, the cerebral cortex is new.
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