RARE DEVONIAN AMMONITE & ORTHOCERAS FOSSIL FROM MOROCCO

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RARE DEVONIAN AMMONITE & ORTHOCERAS FOSSIL FROM MOROCCO Rare Devonian Goniatite and Orthoceras Fossil from Morocco with No Reserve presented by Sahara-imports ************************** You are bidding on this BEAUTIFUL AND REAL FOSSIL PROFESSIONALLY PREPARED originally from ALNIF south east of MOROCCO dated from the Devonian period (350 to 395 million years ago). The size of the specimen is 3 1/2 " by 2" (matrix included). An Ammonite fossils is a cephalopod which once swam in shallow marine seas and became extinct at the end of the Cretaceous period (65 million years ago). The closest living relative to the ammonite is the chambered nautilus. Like the chambered nautilus, the ammonite's ability to swim was due to the unique construction of its shell. The shell contained many air filled chambers, called the phragmocone. The "walls" of each chamber, called septa, were penetrated by a tubelike structure called a siphuncle. It is believed that the air in the chambers was regulated through this "tube". The air in the chambers provided buoyancy, which allowed the ammonite to float. The ammonite lived in the last chamber, which ranged in size from a half of a whorl to one and a half whorls of the shell. The animal protruded out the end of its shell through the aperture. Orthoceras fossil (meaning "straight horn") were primitive types read more

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