posted on May, 4 2013 @ 12:00 PM
reply to post by Hanslune
I know a fair bit about dinosaurs, on account of a wasted youth
Most bipedal dinosaurs did have smaller forearms, but this is largely due to the fact that they evolved from semi aquatic creatures in possesion of
strong back legs (for swimming) making it easier to assume the bipedal stance.
That said there were dinosaurs with large "arms" for instance Therizinosaurus:
the large arms are considered rather noteworthy on this beasty
The "raptors" like Deinonychus had fairly proportioned arms too.
I think it mainly comes down to utility though, most raptors were allegedly egg eaters and it's thought that wings evolved on dinosaurs, not for
flight, but for enveloping prey (insects etc), where as on T-rex they were a bit redundant. Most of the famous dinosaurs are the result of vast epochs
of evolution so they were fairly specialised, by contrast we mammals haven't really been around all that long.
Regarding human giants though, there are biological triggers that are known to cause gigantism, for instance island gigantism:
and of course the abundance of food during Pleistocene Period saw many species increasing in size - I
do think the more wild reports are a little bit optimistic, but there would certainly be areas where the population would be described as giants by
more typical sized people