Southerham Grey Pit is a geological Site of Special Scientific Interest south-east of Lewes in East Sussex. It is a

Geological Conservation Review The Geological Conservation Review (GCR) is produced by the UK's Joint Nature Conservation Committee and is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological ...

site. This site exposes rocks dating to the Cenomanian stage of the

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', ...

, around 100 million years ago. It has preserved many

inoceramid The Inoceramidae are an extinct family of bivalves ("clams") in the Class Mollusca. Fossils of inoceramids are found in marine sediments of Permian to latest Cretaceous in age. Inoceramids tended to live in upper bathyal and neritic environment ...

bivalves which are not found elsewhere in Britain and are important for regional correlation. It is also the last remaining source for fossil fish in the area.

References

{{SSSIs East Sussex Sites of Special Scientific Interest in East Sussex Geological Conservation Review sites Glynde