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Name:
Placenticeras meeki
Age:
Upper Cretaceous
Size:
mm (25.4mm=1 inch): 176 mm (7 inches) in diameter
Location:
Bearpaw Formation, Southern Alberta, Canada, Rocky Mountains
Code:
AM2
Price:
$600.00 - Sold
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This
type of ammonite from the Canadian Rocky Mountains ranks
among the most remarkable of fossil remains. Mineral exchange
during fossilization resulted in the formation of aragonite,
primarily calcium carbonate, the same mineral from which
pearls are made. Ammonites of this type are often called
ammolites in recognition of the shell considered to comprise
a rare gemstone (search the Internet for ammolite to verify
the gem-stone status). The formation of origin in Canada
has been dated to about 70 million years ago. The surface,
depending on light and angle, glows red, green, purple
and other hues.
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