Scunthorpe Ammonite | Aegasteroceras sagittarium | England otodus particularly in the White River

particularly in the White River Formation of the western United States

All varieties of gypsum

the glow of a gemstone in a dark space after being exposed to sunlight or UV light

Location: Australia

Scunthorpe Ammonite | Aegasteroceras sagittarium | England otodus particularly in the White RiverAegasteroceras sagittarium Early Jurassic (200 million years old) Conesby Quarry, Scunthorpe, Lincolnshire, England Frodingham Ironstone, Obtusum Zone Specimen approx. size: 4. 5" x 3. 5" x 1. 75" Matrix approx. size: 5. 25" x 5" x 2. 25" The shell of this ammonite has been replaced by calcite, which contrasts nicely with some of the sutures. The base of the rock has been cut flat for aesthetic presentation without the need for a display stand.