Not at all.
Mammals are alive and well, and include all creatures with fur/hair and skin. Horses, dogs, cats, mice, kangaroos, bears, etc are all just a small sample of the mammals which are not extinct.
Mammoths, on the other hand, were ancient mammals which are now extinct.
You and I are both mammals, and we are definitely not extinct.
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Not at all. Aquatic placental mammals include dolphins, whales and dugong.
after dinsaurs became extinct
we and all large mammals would not be around
No, not all mammals are placental. There are two other groups of mammals: the monotremes and the marsupials.Monotremes are egg-laying mammals, and marsupials are generally pouched mammals, although not all marsupials have fully developed pouches.
YES! They are mammals so of course
No, Marsupials are not extinct. Some might be endangered, but not extinct. Koalas are marsupial mammals but they are not extinct. Kangaroos are marsupials, not extinct. But some may be extinct.Marsupials are simply pouched mammals, and are very common in Australia.Some extinct species of marsupials include:lesser bilbybroad-faced potoroodesert bandicootdesert rat-kangaroo (not kangaroo rat, which is not a marsupial)Toolache wallabyEastern hare-wallabyCrescent nail-tail wallabyThylacine
The oldest extinct mammal is one that lived among the dinosaurs. There are new mammals that are being discovered regularly.
Allotheria are an extinct class of mammals that lived in the mesozoic period. They resembled large rats or modern opossums.
Dinosaurs went extinct.
Mammals .