How can we know how good a dinosaurs sense of smell, vision, running speed etc is just from studying remains found in fossils? I have seen fact files on dinosaurs that goes into some pretty thorough detail and have always wondered how it is possible to speculate this when these creatures are 10s of millions of years old.
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Inferences and comparisons to living animals.
Got lots of sharp pointy teeth? probably a predator. short flat teeth, probably an herbivore.
It’s their fossil so structures that are similar to animals receipt today or we assume that their structures perform a similar function of the things that we see today.
Personalities are just a guess. And educated guess, but still a guess.
We’re getting better with appearance because we keep finding better preserved specimens.
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