🦖🤓 While ceratopsian dinosaurs (this one, triceratops, etc.) shared a common ancestor with the theropods (t-rex, raptors, etc.), they are non-avian and have not been discovered, as of yet, to have had feathered structures. However, a few species did have bristle-like structures on their tails. 🤓🦖

Protoceratops, right?

Thank you, Natalie. I am aware that some dinos are non-avian, but i don't know enough to know which. I appreciate the reply. My complaint was more on them not specifying. Although maybe I'm an amateur who is just being a tad too prickly about the whole thing.

To clarify, all traditional dinosaurs are non-avian. We use non avisn dinosaurs to talk about the extinct ones since if you say "dinosaurs" evolutionarily you have to include birds which often we don't want to. It is true that ceratopsians are more distant from the bird line than theropods.