> The Cenomanian seems to have witnessed the largest sauropods, such as
> Argentinosaurus and Paralititan, perhaps also Bruhathkayosaurus and
> others.
> Why did these giants appear around the mid Cretaceous? Because there was
> ample dry inland habitat? The Cenomanian transgression is said to have
> reduced the latter, to the detriment of sauropods in North America.
Bruhathkayosaurus is Maastrichtian. Then there's the huge
Kimmeridgian-Tithonian Morrison diplodocids, and the large Early Jurassic
Moroccan femur and footprints...