Description
AMMONITE World of Evolution. This latest series is called World of Evolution and is a clever mix of adornment and minting. The struck coin is basically acting as a backdrop here. Depicting a mass of ammonite shells, it appears to represent a mass death of the creatures, a not uncommon event and one that often leaves superb fossil evidence. It’s a very appropriate backdrop for the coins main distinguishing feature, an actual fossil.
Ammonite
Ammonites were predatory, squidlike creatures that lived inside coil-shaped shells. Like other cephalopods, ammonites had sharp, beaklike jaws inside a ring of tentacles that extended from their shells to snare prey such as small fish and crustaceans. Some ammonites grew more than three feet (one meter) across—possible snack food for the giant mosasaur Tylosaurus. Ammonites constantly built new shell as they grew, but only lived in the outer chamber. They scooted through the warm, shallow seas by squirting jets of water from their bodies. A thin, tubelike structure called a siphuncle reached into the interior chambers to pump and siphon air and helped them move through the water. Ammonites first appeared about 240 million years ago, though they descended from straight-shelled cephalopods called bacrites that date back to the Devonian, about 415 million years ago. Ammonites were prolific breeders, lived in schools, and are among the most abundant fossils found today. They went extinct with the dinosaurs 65 million years ago. Scientists use the various shapes and sizes of ammonite shells that appeared and disappeared through the ages to date other fossils.
AMMONITE World of Evolution
Country: Burkina Faso
Year: 2016
Face value: 1000 Francs
Metal: Silver 999/1000
Weight (g): 31.1 (1 oz)
Diameter (mm): 44
Quality: Antique Finish
Mintage (pcs): 500
Certificate COA: Yes
Box: Yes
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