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Re: late night thoughts: adults only
----- Original Message -----
From: "don ohmes" <email@example.com>
Subject: Re: late night thoughts: adults only
Still, I had thought that the overlap between T. rex and sauropods in N.
America was minimal and early, not zero.
Indeed it wasn't zero. "*Alamosaurus*" persisted all the way to The End,
just as *T.* did.
Not that my assessment of the physical vulnerability of sauropods is
affected, or my perception of the stealth-through-immobility
options/capabilities of T.rex and functional equivalents (notably
In that case the sauropods should have died out in the Late Jurassic at the
Nor was I aware that the difference in last appearance times of sauropods
in Asia/North America was so dramatic and clearcut.
It isn't. I talked about the North American "sauropod gap" (which may be an
artifact of preservation). In North America, there's "*Alamosaurus*" from
the late Campanian all the way to the end of the Maastrichtian; in Asia
there are sauropods all the way to the Djadokhta Formation, which is usually
considered early Maastrichtian in age -- there is no late Maastrichtian in
northern and central Asia.