Leioceras opalinum (Reinecke)
Superbly preserved matrix free specimen. To the protoconch on one side. Shows both shell and sutures in parts. First rate example of this zonal index species. An absolute 'beauty'.
Jurassic, Lower Aalenian, Opalinum Zone.
Burton Bradstock, Dorset.
Ammonite : 12 cm diam.
