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  1. I’m not sure if i would call Dilong and Yutyrannus “closely related” since they are proceratosaurids, i think it’s better to use other tyrannosaurids for phylogenetic braketing which only show scales

    1. Avatar for Steven Mason Steven Mason says:

      Excellent comment. This is true, so this passage has been revised to avoid misleading readers. It’ll be more interesting to see if material from Tyrannosaurus or a closer genus comes to light in the coming years.

  2. Avatar for Scot Hamilton Scot Hamilton says:

    I think most of this is crap. Only small theropods from Asia have been found with feathers, t-rex is north American, during the later cretascious period China got cold, n American did not. I may be convinced that many thropods has feathers on they’re eggs, like chick’s covered in down, but likely would have fallen out quickly. My opinion thanks. I hate seeing giant T-rex’s covered in hair.

    1. Avatar for Steven Mason Steven Mason says:

      While I can understand a preference for non-feathered dinosaurs, we don’t get to choose how they looked.

      This is a world map during the Cretaceous:

      Feathers do not equate to heat in the same way that fur does. This is a popular misconception with theoretical backing only. We don’t have large enough birds to study this and haven’t found them in fossils thus far.

      North American dinosaurs did have feathers. Here’s one article covering this:
      A new look at dinosaur fossils pushes back the evolution of feathered wings

      I’m just presenting a few things to consider. Thanks for commenting!