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RE: T. rex vs. Alamosaurus



Quoting Patrick Mellor <mel0812a@westminster.org.uk>:

>  
> 
>       What age was this excavation, would it have been latest
> Maastrichtian? Sauropods moving back North in the latest Cretaceous has
> always seemed very strange to me, because I don't see how they could
> have competed effectively as herbivores against the hadrosaurs. It
> obviously happened though, and I wonder what advantage enabled the
> sauropods to do this....  
>

Late Maastrictian.