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FOSSIL PENDANT -ORTHOCERAS 50.80 CTS [GT 2202]

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ORTHOCERAS PENDANT

Orthoceras was a ancient mollusk that lived more than 400 million years ago. The name means straight horn, referring to the characteristic long, straight, conical shell. The preserved shell is all that remains of this ancestor of our modern-day squid.pin on top-ready to wear.There is a bail holder on top to attach to a necklace.

Well polished all round

Found in Morocco 

 

orthoceras drawing

WEIGHT:  50.80 CTS APP

SIZE:  52 X 12  MM APP

 

The soft body lived in the last open-ended segment at the large end of the conical shell. As the body grew and the housing segment became too small, a dividing wall, called the septa, grew to separate the old “home chamber” from the new one. The differences in the composition of these shell parts allowed for differences in fossilization so the parts can be seen.

The siphuncle is a tube that runs the entire length of the shell, through each of the chambers. This tube had two functions. Once filled with water, the nautiloid could force the water out, propelling itself backward with a kind of jet propulsion. By releasing the water and leaving air space, the tube could serve as a bouyancy device allowing the animal to rise and lower itself to different depths.

These straight shelled nautiloids ranged in size from less than a centimeter to more than 14 feet long!

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sedajewelery
sedajewelery
Mermaid Beach, Australia
Verified
915 Feedback

  • gravity
    gravity
    Positive

    as pictured, older ring has some tarnish but easy fix for silver setting, good fit, happy with purchase

  • pumba
    pumba
    Positive

    Paid and shipped - no feedback left after 100 days

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Shipping Details

Shipping:
$16.00 21 days via Registered Shipping
Ships from:
Australia

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This seller adds 10.00% tax to transactions in Australia.

Overview

Listing Type : Standard
Product ID : 565609
Starts : 14th March 2024 12:00 am PDT
* All prices are in USD