[7] The Pliensbachian levels where dominated by sands and sandstones of marine origin, hosting a highly fossiliferous bed containing a rich mollusc fauna.

[12][13] Pentacrinites Jamesoni Zone, Lower Pliensbachian High energy marginal marine derived from sea ingression Columnals A Crinoid, type member of the family Pentacrinitidae inside Isocrinida.

[12][13] Astarte Cardium Bank, Middle Pliensbachian Low energy and scarce depth nearshore settings Shells A marine clam, type member of the family Astartidae inside Carditida.

[12][13] Grammatodon Cardium Bank, Middle Pliensbachian Low energy and scarce depth nearshore settings Shells A marine clam, member of the family Parallelodontidae inside Arcida.

[12][13] Terquemia Cardium Bank, Middle Pliensbachian Low energy and scarce depth nearshore settings Shells A marine scallop, member of the family Prospondylidea inside Pterioida.

[12][13] Entolium Cardium Bank, Middle Pliensbachian Low energy and scarce depth nearshore settings Shells A marine scallop, type member of the family Entoliidae inside Pectinida.

[12][13] Pseudomonotis Cardium Bank, Middle Pliensbachian Low energy and scarce depth nearshore settings Shells A marine scallop, type member of the family Pseudomonotidae inside Pectinida.

[12][13] Avicula Cardium Bank, Middle Pliensbachian Low energy and scarce depth nearshore settings Shells A marine pearl oyster, member of the family Pteriidae inside Ostreida.

Uptonia Jamesoni Zone, Lower Pliensbachian High energy marginal marine derived from sea ingression Shells An ammonite, member of the family Polymorphitidae inside Ammonitida.

Polymorphites Jamesoni Zone, Lower Pliensbachian High energy marginal marine derived from sea ingression Shells An ammonite, type member of the family Polymorphitidae inside Ammonitida.

[3][12] Pseudohastites Jamesoni Zone, Lower Pliensbachian High energy marginal marine derived from sea ingression Shells A belemnite, member of the family Passaloteuthididae inside Belemnitida.

[12][13] Acrodus Jamesoni Zone, Lower Pliensbachian High energy marginal marine derived from sea ingression Teeth A marine/brackish shark, type member of the family Acrodontidae inside Hybodontiformes.