Age : 85 Million Years Period : Cretaceous Location : South Dakota Gift Box Dimensions : 85mm (3.3") Wide x 60mm (2.4") Deep x 60mm (2.4") High
The term ammonite refers to an extinct group of mollusks. Along with dinosaurs, ammonites died out at the end of the Cretaceous period, about 65 million years ago. Their existence on Earth lasted for about 330 million years. The hard shells, which these squid-like organisms occupied, are found as fossils in many places around the world.
Ammonites are collected and prized for their beauty, but are also important to the study of geology and evolution. They provide a reference for dating sediments, aiding in the exploration for petroleum, and other economic products, and help us to reconstruct the history of Earth.
Although Sphenodiscus has been found throughout much of the world, it is extremely scarce everywhere but in
North America. Sphenodiscus is among the last of the ammonites that lived. Its overall shape is similar to Placenticeras but its umbilicus is smaller and the shell has a very compressed shape with a thin V-shaped edge.
Sphenodiscus from
South Dakota possess the most incredible iridescence that has been found on any mollusk from anywhere in the world.
All fossils and minerals come packaged in an attractive box filled with kraft or wood excelsior and includes a descriptive card. This presentation makes a great display and a cool gift!
A note about fossil and mineral specimen photographs shown on this website.
Specimens priced over $50.00 - If priced over $50.00, the photo is of the actual specimen that you will receive.
Specimens priced $50.00 or less - The photographs of fossils and minerals on this website depict "typical" specimens if priced $50.00 or less. These are not manufactured products. Accordingly, product samples will vary significantly in size, shape, and color from the "typical" specimen in the photograph. If you would like to see a photo of the actual specimen that you will receive, please email us your request and we will try to comply with the request within a couple of days.
All of the fossil specimens offered by Nature's Odyssey are from the GeoWorld Group of Italy. Nature's Odyssey is the only company in the United States to offer these products which have become very popular at the GeoWorld Nature Stores found throughout Europe. The GeoWorld Group works all over the world studying, searching for, and extracting fossils and minerals. The fossil specimens are prepared in Italy, in GeoWorld's Laboratory, by a qualified group of experts, who restore and classify rare and unique pieces as well as common small specimens. Minerals, in turn, undergo delicate cleaning operations and, if necessary, conservative treatments.
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