The Rise And Fall of The Ammonites

The Rise And Fall of The Ammonites - The Rise And Fall of...

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The Rise And Fall of The Ammonites Ammonites have intrigued mankind for thousands of years. This fossil has created enough interest to inspire dozens of stories, legends and myths . The name comes from its appearance: it resembles a ram’s horn. In Egyptian mythology, the God Ammon looked like a man with horns like a ram. The ancient fossil was considered Ammon’s stone, thus inheriting the name, ammonite. Ammonites first appeared in the lower Devonian Period . It is thought by some that they evolved from the older nautiloids. Septa The septa are the walls that devide the chambers within the shell. Nautiloids had simple septa with a single arc. The ammonites developed septa that had intricate folds called lobes and saddles . They also developed delicate lacey patterns on the outer shell. There are three basic patterns for ammonite septa. irregular zigzags-this is called goniatite regular wavy-called ceratite intricate feathery or fern like patterns- ammonite The pattern of the septa can be reflected on the outside of the shell. These are called
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The Rise And Fall of The Ammonites - The Rise And Fall of...

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