Fuller's earth (bentonite) in the Lower Cretaceous (Upper Aptian) of Shanklin (Isle of Wight, southern England) by Ruffell, A, Hesselbo, S, Wach, G, Simpson, M, Wray, D

“…A <35 cm fuller's earth (bentonite) bed is recorded from the Upper Aptian (Lower Cretaceous) Ferruginous Sands Formation (Lower Greensand Group), southwest of Shanklin, Isle of Wight. …”

Stratigraphic relations of the Lower Greensand (Lower Cretaceous) of the Calne area, Wiltshire by Hesselbo, S, Coe, A, Batten, D, Wach, G

“…They are here named the Calne Sands Formation of the Lower Greensand Group (equivalent to part of the Folkestone Beds Formation of SE England). …”