US$ 12.00
Quality grade: A- – Good condition with minor imperfections
An excellent specimen for both scientific study and display
how these specimens formed
These specimens are perfectly suited for natural history collections
Each geode is then split and polished through the centre
Large Cut & Polished Ammonite Pair | 17.5 × 14cm | Lower Cretaceous | Madagascar ACRIDIDAE Quality grade: A- – Good115 Million Years of Natural Architecture Ammonites were cephalopod molluscs relatives of today's nautilus and squid that dominated the world's oceans for over 300 million years before their extinction at the end of the Cretaceous period. Named after the ram horned Egyptian god Ammon, whose coiled horns their shells resemble, they ranged in size from a few millimetres to over two metres in diameter. This matched pair, sourced from Madagascar and