nats, you are an Oxfordian (an epoch of the Upper Jurassic (as are people from Kimmeridge in Dorset - or Kimmeridgians)
Moving to the Middle Jurassic, you have your Bathonians (from Bath).
Devonians, of course, have a whole era named after them.
As do us Welsh with the Cambrian, after Cambria, the Latin for Wales.
Although Eras are divided into Upper - Middle - Lower, and Epochs are divided into Late - Middle - Early; there is no truth in the rumour that the Late Norian epoch was named after a certain League One football team that play at Brisbane Road, E10.