Ammonite With Opalescent Shell -Approx 180 million years old- from Madagascar Tyrannosaurus rex Size: 150x110x90mm

Size: 150x110x90mm

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Ammonite With Opalescent Shell -Approx 180 million years old- from Madagascar Tyrannosaurus rex Size: 150x110x90mmThis exquisite ammonite with opalescent sheen was excavated from the Mahajanga region of Madagascar. Approximately 180 million years old (Mesozoic), it's a specimen of exceptional size, quality and completeness, with darting irridescent red flashes. The nacre within the shell of this creature has fossilized over millions of years, transforming into a calcium carbonate known as aragonite, causing this refraction of colour. At 170x145 mm in size, with a