This is a real partial dinosaur toe bone (phalange) from an Orthinomimus! Orthinomimus was an omnivorous feathered theropod dinosaur that once roamed North America. The bones of this "raptor" were found in the Judith River Formation, Montana.
They are over 75 million years old and available worldwide!
This specimen measures ~2" long and was sourced from the old Hobberlin Museum collection.