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FO203 South Dakota Ammonite with Clam

FO203 South Dakota Ammonite with Clam

$40.00

Here is a very nice, above average quality, specimen of South Dakota Ammonites. This exceptional specimen is from Edgemont in western South Dakota.  The well-preserved Ammonite appears to be a Placenticeras and measures 1 1/2″ x 1 3/8″ x 3/8″ and the clam measures 1 1/8″ x 1/2. It sits in a matrix measuring 2 1/8″ x 2 3 1/8″ x 3/4″. A great way to begin your fossil collection.

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Description

Ammonites are extinct members of the cephalopod group of mollusks. Only a limited number of species have survived to the present day which includes the squid and the chambered nautilus. Ammonites had a multi-chambered shell, and added more chambers as it grew, always living in the outer chamber. They lived in the Cretaceous period some 63 to 130 million years ago.

Additional information

Weight.25 lbs
Dimensions2.125 × 2.375 × .75 in

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