"Dinosaur that terrorised the Tyrannosaurs found" Topic
3 Posts
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Tango01 | 12 Feb 2015 10:04 p.m. PST |
"A new giant meat-eating dinosaur that terrorised the early relatives of Tyrannosaurus rex has been discovered in Utah. A new species of predatory dinosaur that was so big it would have terrorised early Tyrannosaurs has been discovered. Siats meekerorum, named after a mythical man-eating monster, is thought to have grown up to 40ft long, making it one of the three biggest meat eating dinosaurs to have lived…"
Full article here link Amicalement Armand |
mandt2 | 13 Feb 2015 9:00 p.m. PST |
Those tiny arms are an evolutionary mystery. Aren't they? They seem almost useless, yet this guy had them, T-Rex, Allosaurus, and others over a span of millions of years (?) |
Bowman | 16 Feb 2015 1:36 p.m. PST |
Not useless at all. The first complete T-Rex forearm was only discovered about 25 years ago. They were amazingly strong for their size. The attachments where the muscles connect to the bone iare very large. This indicates that large muscles made up the forearm. This is confirmed by the high degree of cortical plate formation in these forearm bones. So they may have been small, but they were very powerful. But why? The obvious answer is to fixate a squirming meal long enough to bite into. Other theories is to hold on to his mate during copulation, and to be able to pull himself up from a prone position. And just to be pedantic, the new dinosaur didn't terrorize T-Rex. It terrorized T-Rex's predecessors almost 30 million years earlier. |
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