Oh, look! A cross-section of dino bones! Also, T-Rex had feathers...
Recovered historical discussion from Oh, look! A cross-section of dino bones! Also, T-Rex had feathers....
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Excerpts:
"A detailed look at more than 200 bones from 20 individual animals at various stages of development revealed they grew much more rapidly inside the egg than other dinosaurs and flexed their muscles in much the same way as birds and humans."
Another article
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"And then Dilong turned up. Dilong is a basal tyrannosauroid, in other words an early member of the group that includes all tyrannosaurs such as the legendary T. rex and animals like Zhuchegtyrannus that adorns the banner of this blog. Dilong was small compared to its later cousins, but also had feathers. Not too many were preserved but clearly these were present and the animal had at least some. These feathers were simple filaments and the animal would have looked somewhat shaggy rather than the nice 'neat' appearance we typically associate with birds."
Archived source: https://web.archive.org/web/20140329082707/http://www.spacetimeandtheuniverse.com/off-topic/6138-oh-look-cross-section-dino-bones-also-t-rex-had-feathers.html
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J. Sherlock Brown III
I expect to do a video in which I am accompanied by a number of members from the local swimming team in a family pool going from very shallow to deep. I will be in the shallowest end and be the tyrannosaur, with arms bound short. Varying size swimmers will enter the pool, crossing it in front of me at various distances down the pool. When each reaches the middle axis they will turn away from me as I begin pursuing them into the deep end. Within the most shallow water, I will easily catch them, being able to run in the shallows faster than they can swim. At some point in the experiment, faster swimmers who start farther away (in deeper water) will be able to escape, as the deeper water slows my walking.
Stimulus for this example is the T-Rex's tail and stubby arms. In the shallows, the over-reaching muzzle will jaw the prey, and arms will succeed only if the prey is too slow and T-Rex doesn't bother to bend down to crunch it. In the deep, the arms become inert, so as long a T-Rex keeps head above water, its opportunity to catch prey is optimized. Its tail and body are postured to suggest to me no hinderence in water, possibly asset. The speculation is vectored to understand habitat and environmental change: running down prey on dry ground is not as efficient for T-Rex as is the shallow water scenario - if valid, so when Earth is losing its surface water, advantage shifts toward prey. If T-Rex chases toward water, its advantage.