Did they determine this by comparing what DNA fragments they’ve managed to recover, or by physical skeletal structure similarities, or what?

I’m no expert in the field, but I just don’t see it.

  • BertramDitore@lemmy.worldEnglish
    4·
    6 months ago

    The best evidence for their common ancestry is from 2008, but it doesn’t look like there have been any new developments since then.

    Molecular analysis of a shred of 68-million-year-old Tyrannosaurus rex protein — along with that of 21 modern species — confirms that dinosaurs share common ancestry with chickens, ostriches, and to a lesser extent, alligators.

    Source Harvard Gazette