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Has the Missing Link Between Birds and Dinosaurs Finally Been Found?
Amaze Lab
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9 months ago
What did dinosaurs evolve that eventually allowed them to evolve into birds?
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Learning
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00:00
Despite birds these days being known for flight, that wasn't always the case.
00:08
Experts believe that most avians evolved from dinosaurs, and at some point they had to develop
00:12
wings and take off.
00:13
And now experts say they may have discovered that missing link.
00:16
I know what you're thinking.
00:17
What about pterosaurs, or these massive prehistoric fliers that took to the skies 200 million
00:22
years ago?
00:23
Well, it turns out those aren't even classified as dinosaurs, and around 120 million years
00:27
ago is when scientists believed the first feathered theropods developed the first wings.
00:31
And this creature might hold the clues on how they first developed.
00:34
Researchers from the University of Tokyo say that this body part, called the propitagium,
00:39
evolved first.
00:40
A long tendon stretching from the shoulder to the wrist.
00:42
But that body part is soft tissue, meaning it doesn't usually survive the fossilization
00:46
process.
00:47
However, by looking at how it restricts movement, the paleontologists were able to divine which
00:51
creature's body positions were more likely to have been restricted by this body part.
00:55
And they believe they have found a common ancestor to all Maniraptorans 150 million
00:59
years ago that would have had the tissue structure.
01:02
And since we believe that birds evolved from these very theropods, it's not much of a leap
01:05
to say they've found the missing link.
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