Article: Echinoids from the Jurassic Oxford Clay of England

The echinoids of the Oxford Clay (Callovian-Oxfordian) of southern England have, until now, remained very poorly known. Three species are described: Eosalenia jessoni is shown to be a member of the Aspidodiadematidae, a rare deep-water family of Diadematoida, and Trochotiara superbum and Disaster moeschi are both reported from Britain for the first time.