In fact, elephants seem to have evolved far many more pairs than even their direct genetic ancestors like the woolly mammoths and mastadons
. The researchers also experimented with elephant cells, by exposing them to chemicals and radiation.
Although it is unknown if there was a now-extinct megafaunal seed disperser for the American Persimmon (Mastadons
have been suggested, Barlow, 2000), it is too large to be consumed by typical temperate North American dispersers such as birds (Skallerup, 1953).
You had everything from these huge herbivores like the mammoths and mastadons
to some of the most formidable carnivores who have ever walked the planet like sabre-toothed cats, American lions, cave lions.