Sous-étage Zones Sous-zones Horizons
Supérieur Parkinsonia parkinsoni Parkinsonia bomfordi Parkinsonia bomfordi
Parkinsonia crassa
Strigoceras truelli Parkinsonia dorsetensis
Parkinsonia parkinsoni ?
Parkinsonia acris Parkinsonia pseudoparkinsoni
Parkinsonia acris
Garantiana garantiana Garantiana tetragona  
Garantiana subgaranti  
Pseudogarantiana dichotoma  
Stenoceras niortense Garantiana baculata Orthogarantiana shroederi
Caumontisphinctes prorsicostata
Caumontisphinctes polygyralis Caumontisphinctes bifurcus
Caumontisphinctes polygyralis
Teloceras bansksi Caumontisphinctes aplous
Caumontisphinctes diniensis
Inférieur Stephanoceras humphresianum Teloceras blagdeni Teloceras coronatum
Teloceras dubium
Stephanoceras humphresianum Stephanoceras gibbosum
Stephanoceras umbilicum
Dorsetensia romani Chondroceras gervillii
Dorsetensia edouardiana
Sonninia propinquans Dorsetensia hebridica Dorsetensia pinguis
Sonninia patella Sonninia propinquans
Sonninia patella
Witchellia laeviuscula Witchellia laeviuscula Witchellia laeviuscula
Sonninia jugifera
Shirbuirnia trigonalis Shirbuirnia trigonalis
Witchellia connata
Fissilobiceras ovalis Fissilobiceras fissilobatum
Fissilobiceras ovalis
Hyperlioceras discites Hyperlioceras subsectum Hyperlioceras subsectum
Hyperlioceras rudiscites
Hyperlioceras walkeri Hyperlioceras walkeri
Hyperlioceras mundum
Hyperlioceras incisum