Pycnofibres are known only in pterosaurs. They are hair-like structures, and share some traits in common with feathers, but the structures are unique to pterosaur evolution. It’s an example of convergent evolution. Synapsid reptiles (mammals) evolved hair and fur, avian reptiles (birds and theropods) evolved feathers,…

In generaly, I find cities that get a lot of snow are MUCH better equipped to deal with it.