Ammonites & Orthoceras

Ammonites and orthoceras are fossilized shells of extinct marine cephalopods representing some of the most iconic and collectible fossils. Ammonites, with their distinctive spiral shells ranging from thumbnail-sized to over a meter across, showcase extraordinary geometric beauty and evolutionary diversity across geological time. Orthoceras, the straight-shelled cephalopod precursors, offer distinctive elongated forms and frequently striking preservation qualities.Significant ammonite and orthoceras deposits occur worldwide in Mesozoic and Paleozoic marine sediments. Notable localities include Madagascar, Morocco, Germany, Canada, and the United States. Moroccan deposits yield abundant well-preserved ammonites in exceptional quality, while Madagascar provides large specimens with striking coloration and iridescence. German and English deposits contribute important paleontological material.Discover our ammonite and orthoceras collection featuring quality specimens from prime paleontological localities. Our selection includes diverse species and sizes from various geological time periods. Browse fossil cephalopod specimens and add these iconic marine fossils to your collection.