basically the mesozoic was probably much fluffier than we ever imagined

Sciurumimus albersdoerferi was a theropod dinosaur from the Late Jurassic of Germany, living about 150 million years ago. The only known specimen is of a juvenile with preserved feather-like filaments, and the longer fuzz along the tail gave it its genus name – Sciurumimus meaning “squirrel mimic”.

Initially it was considered to be a member of the megalosauroidea, a group not previously known to have any evidence of feathery integument. More recent analyses have suggested it might actually be a basal coelurosaur.