Large Cut & Polished Ammonite Pair | 21cm | Lower Cretaceous | Madagascar dead sexual dimorphism (females are larger

sexual dimorphism (females are larger than males)

Specimens measure 70-90mm in wingspan when spread

Artistic creation and mixed media

Species: Cyriopagopus minax (Thai Bird-Eating Tarantula)

85 × 61mm

Large Cut & Polished Ammonite Pair | 21cm | Lower Cretaceous | Madagascar dead sexual dimorphism (females are larger115 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, ammonites ranged in size from a few millimetres to over two metres in diameter. This pair, sourced from Madagascar and dating