Percivalia hauxtonensis Black, 1973
Black, M., (1973): British Lower Cretaceous Coccoliths. I-Gault Clay (Part 2). - Palaeontographical Society Monograph, 127: 49-112.
Percivalia hauxtonensis
Black, 1973
Early Cenomanian
Cambridge Greensand at Hockwold, Southeastern England.