Specimens are described and figured from loose sandstone blocks found at various localities in East Anglia. They are shown to belong to genera with Russian affinities and to confirm Dr. Casey's views that these blocks are of late Jurassic (Volgian) age rather than early Cretaceous as had previously been supposed. © 1971, The Geologists' Association. All rights reserved.
Ager, D. V. (1971). The Brachiopods of the erratic blocks of Spilsby Sandstone in Norfolk and Suffolk. Proceedings of the Geologists’ Association, 82(4), IN1–IN4. https://doi.org/10.1016/S0016-7878(71)80017-2