Yaverlandia bitholus was a maniraptoran theropod . Known from a partial fossil skull found in early

Cretaceous strata on the Isle of Wight.

it was initially believed to be a pachycephalosaurus however Research by Darren Naish proved it to have been a theropod dinosaur seemingly maniraptoran. It is currently reconstructed as a member of the troodontids.
Yaverlandia by durusoraptor-dbruni6

Reconstruction of yaverlandia by durusoraptor-dbruni6