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Re: [dinosaur] Non-avian dinosaurs all extinct



Lots of solid arguments here, and I *certainly* don't disagree with the conclusion!

But I am not convinced by this specific argument: "The ecosystems that could maintain sauropods and ceratopsids are long gone". Don't forget that by the end of the Cretaceous, the ecosystems that could maintain Late Jurassic sauropods had been gone for much longer than end-Cretaceous ecosystems have been gone now, but that was no impediment to sauropods surviving and flourishing. I see no reason to doubt that they would have evolved just fine alongside what became modern ecosystems, had they made it through the K/T extinction.

-- Mike.


On Tue, 25 May 2021 at 11:00, dawidmazurek@wp.pl <dawidmazurek@wp.pl> wrote:
Ceratopsids never reached Africa. The ecosystems that could maintain sauropods and ceratopsids are long gone, so these animals would have to be evolutionary highly derived and very different from their Mesozoic counterparts. There is no fossil record of Cenozoic sauropods and ceratopsids, so they would need to be restricted in number and area throughout the last 66 my. No terrestrial refugium can last this long. It is highly unlikely that any such a big animal could escape all those cell phones' cameras, and also leave no footprints behind.

Dnia 25 maja 2021 07:40 Poekilopleuron <dinosaurtom2015@seznam.cz> napisaÅ(a):

Good day!

Recently I saw a discussion about the possibilities of non-avian dinosaurs still living in certain parts of the world (so called cryptids, like mysterious Mokele-mbembe). Of course this is a nonsense, but some people are very adamant in this case. So I would like to ask, what would be your most important arguments for the fact, that there can actually be NO recent sauropods and ceratopsids in Central Africa, etc.? Thank you very much, in advance! Tom