How dinosaurs originated


This video is called Brief Lecture on the Origin of Dinosaurs.

From Current Biology, Volume 24, Issue 2, R87-R95, 20 January 2014:

Summary

Dinosaurs arose in the early Triassic in the aftermath of the greatest mass extinction ever and became hugely successful in the Mesozoic. Their initial diversification is a classic example of a large-scale macroevolutionary change.

Diversifications at such deep-time scales can now be dissected, modelled and tested. New fossils suggest that dinosaurs originated early in the Middle Triassic, during the recovery of life from the devastating Permo-Triassic mass extinction. Improvements in stratigraphic dating and a new suite of morphometric and comparative evolutionary numerical methods now allow a forensic dissection of one of the greatest turnovers in the history of life. Such studies mark a move from the narrative to the analytical in macroevolutionary research, and they allow us to begin to answer the proposal of George Gaylord Simpson, to explore adaptive radiations using numerical methods.

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13 thoughts on “How dinosaurs originated

  1. My sweet friend, a new award has come out! Please visit this link, I have nominated you ! :transcendingbordersblog.wordpress.com/2014/01/22/working-to-change-the-world-blogging-award/ I hope you accept! Love you!

  2. I was hoping for something new here, but whoever presented the video misrepresented the permian extinction (Siberian traps, et al) and to a lesser extent, the cretaceous extinction. Timelines of archosaurs (which he mispronounced) wasn’t but where did he get the characterization of having downy feathers?

    In spite of my complaints, the video was still informative.

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