Those are trilobites, part of the arthropod phylum. They have exoskeletons (i.e no inner bones), so they would probably look quite a lot like their fossils. Comparing them to vertebrates like humans (or dinosaurs, or whatever) in this context makes no sense.
And an exoskeleton can't have anything covering it because... ?
Those are trilobites, part of the arthropod phylum. They have exoskeletons (i.e no inner bones), so they would probably look quite a lot like their fossils. Comparing them to vertebrates like humans (or dinosaurs, or whatever) in this context makes no sense.
And an exoskeleton can't have anything covering it because... ?
Because that's what the "exo" part means.