[SunkenCiv]

Presumably, the sea creature had developed a way to cope with the low water temperatures. Kear and his team speculate that the beasts might have been warm-blooded like mammals and able to regulate their core body temperatures, or that they might have taken part in seasonal migrations like modern whales.

Heh... or, Doh! the whole planet was warmer. :')

[Fred Nerks]

Off topic perhaps but...

I've always wondered why anyone would try to tell us that with those powerful hindlegs...these creatures would waste their energy walking when they could cover far more ground by HOPPING!

I know it takes an aussie to see it that way, but what possible use could that massive tail be to a dino - if it just sticks out like that...hmmm? Can you imagine how painful it might have been if it tried to SIT DOWN?