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Huge Prehistoric Jurassic Period Fossilized Ammonite Fossil For Sale

Huge Prehistoric Jurassic Period Fossilized Ammonite Fossil

A very large,fine andgenuine Ammonite fossil. This is animpressive fossilized ammonite from the Early Jurassic Period (190-175 Million years ago).

The anatomy of the ammonite is easily observed here. The long extinct creature lived in the phragmocone (inside of the shell), which was divided into camerae (chambers) by septae (the prominent lines that run across the coiled shell). The ammonite only lived in the foremost and largest of these chambers, and would form a new chamber when the creature had become too large for the current one. This process of new chamber formation results in the characteristic striated appearance of the ammonite shell. The exquisitely evolved ammonite maintained communication with these old chambers, and used them as an ingenious "buoyancy device", forcing water in and out using the phenomenon of osmosis!

Close inspection reveals a multitude of smallerprehistoic marine animals, preserved in the surrounding matrix.

The ammonite was not a bottom dweller, but instead swam at mid-level in the early seas of our planet, an incomprehensibly long time ago. It would have fed on fish and other small creatures, and was itself fed on by dinosaurs. As it spent it's time in mid-water, the ammonite had to be perfectly symmetrical in the vertical plane, to avoid falling over to one side - morphologists refer to this shape as planispiral.

Although ammonites survived numerous extinction phases, they were unable to survive the cataclysmic K-T extinction event, where they perished along with all the dinosaurs.

Max. diameter of ammonite:12inches.

Condition: Well preserved specimen.

Provenance:

Ex. British Private Collection. Reputedly found in Morocco many years ago.

Authenticity
All items are unconditionally guaranteed to be Authentic as described. For added security we offer a full money-back guarantee if a recognized authority disputes the authenticity of any object sold. We send paper invoices incorporating a signed certificate of authenticity and photograph of the item. Shipping
We send all collectibles Registered, Signed-for and Insured. We do not aim to profit from shipping charges. As volume sellers with preferential rates, we are mostly able to ship at below commercially available prices. For customers
If you wish to leave us a note or have a special request for delivery, please do not use the "item notes" on the checkout. Instead, please send your request via the contact seller link. Combined shipping
In some cases we can combine multiple items into a single package to save you money. However, If you plan to purchase items over the course of a day or more you must delay payment and let us know after you have purchased the first item. Otherwise all items are sent following cleared payment. Terms and conditions
No Sales Tax/VAT will be charged by ourselves. We are not responsible for customs delays/duties. As legitimate sellers, we aoffere by United Kingdom and European Union Export regulations. We do not mis-describe items on the customs form. Please note that in most countries, antiques and collectibles are eligible for minimal/zero charges on importation.
ArtAncient Limited is registered in England no. 06376708
Vat registration no: GB 948 9832 53.

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Huge Prehistoric Jurassic Period Fossilized Ammonite Fossil

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Huge Prehistoric Jurassic Period Fossilized Ammonite Fossil:
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