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insite148 karma

What do you think about the Kulindadromeus study? I have been thinking a lot about this since last week. I tend to believe that they weren't quite feathers but some of the earliest of dinosauria and ornithodira had fine hair-like structures. Just my guess. Do you think those were proto-feathers or another type of covering that evolved separately?

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Do you know the maximum height a human can dive into water from safely?