Periodo Coniaciense
Cyclothyris vespertilio  (BROCCHI)

Gurat. France

Rectithyris cf. depressa   (Valenciennes in Lamarck,1819)

Jaca ( Huesca )

Cyclothyris aff. difformis      (Valenciennes & Lamarck 1819)          

Sotoscueva - Valdeporrez,Burgos, Spain

     Cyclothyris  aff. difformis       (Valenciennes in Lamarck 1819)

Sotoscueva - Valdeporrez,Burgos, Spain

    Nucleatina nanclasi (Coquand)

Sotoscueva - Valdeporrez,Burgos, Spain

   Nucleatina nanclasi (Coquand)

Sotoscueva - Valdeporrez,Burgos, Spain

Nucleatina nanclasi juvenil (Coquand),

Sotoscueva - Valdeporrez,Burgos, Spain

Nucleatina nanclasi juvenil (Coquand)

Sotoscueva - Valdeporrez,Burgos, Spain

Periodos