Promoicroceras planicosta (Sowerby)
11 beautifully preserved calcitic Ammonites all on one surface. Collected mid 1980's. These multi Promicroceras specimens are now virtually impossible to obtain.
Jurassic, Upper Sinemurian, Obtusum Zone.
Black Ven, Charmouth / Lyme Regis, Dorset.
Specimen : 13.5 x 6.5 cm.
