Re: Regarding Spinosaurus

["Fam Jansma" <fam.jansma@worldonline.nl>]

Nick P. wrote:

>It is certainly possible for a large, warm-blooded, terrestrial predator to
support itself on fish, at least for a >while, if there are enough fish
>around.  Many brown bears all around the north Pacific get most (perhaps
>sometimes all?) of their food intake in the form of salmon during the
salmon runs.

The sail on the back of Spinosaurus could be clue to the coolbloodiness of
this critter. Look at present reptiles, they need to warm themselves in the
morning to "activate" themselves in the morning and because of their
colbloodiness, they need less food. A sail would surely have speeded up the
process so the Spinosaurus was able to hunt fish in the morning. Fish are a
little numb in the morning, making them easier to catch and so supplying the
Spino every morning with a scaly breakfast. If the Spinosaurus was
coldblooded, it also needed less fish to eat every day, so it wouldn't have
needed a big
fish-supply.

>Nick P.


Rutger Jansma