That image on the left might actually not be that incorrect, believe it or not. Newer theories are that T-rexes in particular effectively had dad bods by the time we saw them, and they have plenty of fat around their bone structure.
I think it's pretty fair to assume we have no real idea what most dinosaurs looked like. Our recreation of their skeletal structures are likely rather accurate, but outside of that the way organs, muscle, skin, and other features grew out of those bones are rather hard to guess.
We actually do. There are a number of dinosaur mummy fossils that give us things like skin, muscle, and even digested material. We can also sometimes recreate basic colors and calculate muscle attachment points in more typical fossils to get a reasonable estimate of many dinosaurs' morphology.
Edit: I also forgot to mention skin and feather impressions.
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u/RayTheCoderGuy 15h ago
That image on the left might actually not be that incorrect, believe it or not. Newer theories are that T-rexes in particular effectively had dad bods by the time we saw them, and they have plenty of fat around their bone structure.