The Keuper Waterstones is a geologic formation in England. It preserves ichnofossils of Varanopus aff. curvidactylus, Swinnertonichnus mapperleyensis, Deuterotetrapous plancus, Chirotherium swinnertoni, Microsauropus acutipes and Erpetopus willistoni dating back to the Middle Triassic (Anisian) period.Keuper Waterstones at Fossilworks.org
See also List of fossiliferous stratigraphic units in England
References
Further reading W. A. S. Sarjeant. 1967. Fossil footprints from the Middle Triassic of Nottinghamshire and Derbyshire. The Mercian Geologist 2:327-341 H. H. Swinnerton. 1910. Organic remains in the Trias of Nottingham. Geological Magazine, decade 5 7(5):229