Promicroceras planicosta (Sowerby)
Free standing display specimen of the famous 'Ammonite Marble' from Marston Magna. One face shows a cluster of 7 beautifully preserved 3D Ammonites. There is another complete Ammonite higher up the specimen.
Jurassic, Upper Sinemurian, Obtusum Zone, 'Ammonite Marble'.
Marston Magna, Somerset.
Specimen : 8.5 x 8 x 5 cm.
