Goniatite
Ammonite
Phylum Mollusca,
Class Cephalopoda, Subclass Ammonoidea, Order Goniatida
Geological
Time: Devonian (400 million years old)
Size: (25.4mm=1
inch): 6.2 inches across, 2.4 inches thick
Fossil Site:
Atlas Mountains in Morocco
Fossil Code:
G2
Price: $60.00
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 Goniatites
are ammonites with a distinctive goniotitic zig-zag pattern in the
sutures that mark the spiraling growth of the shell. The extinct
ammonite that decended from Nautiloids is an example of the remarkable
symmetry often found in nature. Mineral exchange over the eons can
create an amazing array of contrasting colors and the beautiful
natural display you see here. Ammonites were Cephalopods sharing
a common ancestor with the squid and octopus that appeared in the
Devonian and disappeared with the dinosaurs at the end of the Cretaceous
period.
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