|
About hibernation and burrowers. There are real
proofs that all surviving primitive mammals hibernated? Arboreal
proto-primates, like Purgatorius and relatives...they hibernated?
It's like all mammals saying: "Oh, there's a meteor
destroying our world! Let's hibernate!"
But if it's true, there will be a pattern.
Hibernating animals usually live on high latitudes. So, there would be survivors
mainly in N North America, N Europe, S South America and Australia. Maybe. (And
the polar dinosaurs from Australia?)
Maybe I'm wrong, but I think studies about KT
faunal transition come mainly from North America. There are other places where
it can be studied? Where there wre fossil records enough to reach some
conclusion? Lower Paleocene in Europe is almost unknown, the same for Africa,
Australia, South Asia.
Dinosaurs were worldwide. Would any kind of
disaster destroy all them? I think some species of dinosaur
would survived in some isolated island, like Madagascar.
Madagascar has ever been a striking mystery to me.
There's no fossil between Cretaceous and Pleistocene. So, we know nothing about
it! Lemurs, tenrecs and viverrids are descendants of African island-hoppers, but
there's no trace of a former fauna.
India is alike. No fossil between Cretaceous and
Miocene.
Joao
|