Spinosaurus Intimidation

First of all, the image with the skeletons is NOT a good comparison, even though this is not a Rex vs Spino, it could quickly turn into one (solution, ignore ANYONE, who bring Rex and Spino size into this).

That said, the topic at hand. 

Intimidation, mating purposes,  and temperature regulation are the three most likely uses.

I know what you mean MrHappy9097, that's why I included a second image.  

And I agree with the three functions being the most likely.  I only decided to concentrate on intimidation because almost everyone I spoke to (face to face) about Spinosaurus kept mentioning temperature regulation to be the main function, but didn't think the sail was really used for colour-flushing.

Thanks for your input.

I agree with both of you. I always take the sail as a 'sex tool'. I always imagine male Spinosaurus used their vivid-coloured sail to attract females for mating, AND intimidate other males. Hmmm... maybe males had sails bigger thn those of females.

It's a pretty interesting thought, but, I have to assume we never know.

Did you know, when parasaurlopus was first dicovered, they believed its horn like feature was a snorkel for underwater events 'n stuff, Now we know its for nasal calls, the echo for long distances....

These are some really good theroies...

Thanks, and I know that. Pretty strange. I have an old dinosaur book that features them as "giant snorkeling ducks"!

I've heard that theory too. What research has proven.

This guy just mentioned size, saying it was just the spine that made it look that big.

Actually, he said that they are almost the same height at the pelvis, but the sail makes it look larger, thusly, more intimidating. Stay out of size though, is is purely the intimidation factor of that sail.

Double post

But he dont know that, you know what i mean

Based off of most dipictions of their sizes, they are similar height to each other, but the sail makes it look a helluva lot taller than it would be without it. It's all just his opinion, and we have ours, so we don't HAVE to agree with it, just give it some consideration.

Spinosaurus may have used its sail for intimidaition, thermoregulation, display, or something else entirely. That said, it may have used its sail for more than one purpose. 

Yeah...Like an Anole or Bird of Paradise. The female Spino might've had a smaller sail than the male. It probably was the amazing multi-purpose tool used by Spinosaurus.