Also some people did understand this could have been an ancient animal that used to prowl the title . The age before Charles Darwin was during a time when people saw bones of giant extinct animals not everyone’s initial thoughts were, “Oh this must be a long extinct species.” They didn’t know what it was so some people thought seeing dinosaur bones or any extinct animal’s remains was a indicator there were some still living out there. Think of it kind of like discovering a dead deer’s bones. Your initial thought would be to think there are some deer around. This is the same logic for some people to have upon seeing these things.