What Kind of Evidence Do You Have for Extinct Animals?

In the mediaeval period, lots of evidence is very unreliable. It shows there might have been a divorce and between what people were thinking about and what was around them in terms of wild life in the natural world. And i think sometimes we get so caught up in weather animals look naturalistic, that we forget that these figurative lions are drawn in a very r a very prescribed style. They're very highly artistic. So people must have been thinking about lions a lot and drawing lions a lot for that tradition to develop - even if they weren't seeing lions a lot.