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Re: Not T rex was Alamosaurus as biggest North American sauropod



Rescued from truncation:

One item we need to be very cautious about is asserting that Tyrannosaurus =
rex hunted Alamosaurus of any size. That's because Alamosaurus is known fro=
m early Maastrichtian sediments well before it is likely that T rex was roa=
ming about. Whatever hunted these titanosaurs it cannot be called T rex. Ma=
ybe it was Tyrannosaurus, but not T rex. The tyranno remains found in Alamo=
s beds are too scrappy to diagnose, at moment am not entirely sure how big =
they are. Just because there was a rock band T rex does not mean we have to=
label every tyranno from N Amer that's big T rex.

Nor as far as I know is it certain that any sauropods were out and about in=
N Amer at or near the K/P boundary (which should be the M/C boundary, as t=
he P/T boundary should be the P/M boundary but I digress).

GSPaul



Le 09/12/2011 16:41, Gregory Paul a écrit :
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