It is particularly associated with the fossil beds in the Whitby Mudstone Formation, Yorkshire, England.
Whitby | Whitby, Ontario | formation | mudstone | Command (military formation) | Whitby Abbey | Synod of Whitby | Elliot Formation | Lance Formation | Daniel Whitby | Crato Formation | Chinle Formation | Two Medicine Formation | Tamayama Formation | Missing Man Formation (band) | Missing Man Formation | Mary Anne Whitby | Marcellus Formation | Kirkwood Formation | Gettysburg Formation | Clarens Formation | Whitby Psychiatric Hospital | Whitby Mudstone Formation | Whitby Gothic Weekend | Tunbridge Wells Sand Formation | Santana Formation | Phalanx formation | phalanx formation | Mahantango Formation | Leduc Formation |
It is known from the holotype and only specimen, MMUM LL 8004, an almost complete, three-dimensionally preservedand and articulated skeleton, found from the Hildoceras bifrons Zone (181.2–180.7 Ma) of the Alum Shale Member, Whitby Mudstone Formation, dating to early Toarcian stage.