Opalised Iridescent Ammonite Fossil

A large red iridescent ammonite fossil dating from the late cretaceous period (100.5 – 66 million years ago). This huge plancenticeras ammonite is approximately 16 inches tall and has an iridescent lustre that showcases a vibrant red hue. Once a living creature, this ammonite has developed its red iridescent lustre over millions of years of compression, transforming into a striking gemstone. A rare find. Provenance: From the fascinating collection of Gordon Walkden (1944-2022), emeritus Professor of Geology at Aberdeen University. Affectionally known as Aberdeen’s answer to Indiana Jones, Walkden contributed enormously to research through his papers and talks on British marbles, minerals and fossils...

A large-scale fossilised natural ammonite specimen from an ex UK private collection. Sourced from South Ferriby Quarry, Lincolnshire, this striking fossil is of prominent structure, ...

A large-scale natural fossilised ammonite specimen. Sourced from South Ferriby Quarry, Lincolnshire, this striking fossil is of impressive scale, prominent structure, and museum qual...

A pair of cut and polished ammonites with crystalline chambers originating from Madagascar. Once living creatures, these ammonites have developed their flowing colours and patterns d...

This fossil ammonite specimen, named Kranaosphinctes, is from Madagascar. It is a little one (36cm diameter, knowing it can go wider than 50cm). They were found alive during the cr...

Madagascar Jurassic - Cretaceous Period, 200 - 145 million years old Dimensions: 8.75 × 7.5 × 1.875 in. / 22 × 19 × 4.75 cm Weight: 4.125 lbs / 2.169 kg Height on custom display ...

Gigantic Ammonite fossil on custom black stand. Approx. 150-200 Million Years Old. An ammonite is an extinct marine animal belonging to the class of squid. Ammonites lived in the ...

Madagascar Jurassic - Cretaceous Period, 200 - 145 million years old Dimensions: 7.5 × 5.5 × 1.25 in./ 19 × 14 × 3 cm Weight: 1 lb 9 oz/ 710 gm In this example, the complex patte...