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Re: Fwd: Spinosaurs show semi-aquatic oxygen isotopes

-- On Fri, 2/5/10, Jocelyn Falconnet <j.falconnet@gmail.com> wrote:

> Has anyone ever thought about the utility of having a large
> "sail" in
> this case ? As all dinosaurs, spinosaurids needed to
> maintain a
> relatively high body temperature, but they would soon lose
> heat if
> they stay for long in water (even if their large size would
> limit heat
> losses). 

Shallow waters can be quite warm. They might have needed the sail to _lose_