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$18.00 USD
価格

183.05 CTS ORTHOCERAS POLISHED SPECIMEN

3415
1

SKU
寸法(mm)
69.000 x 35.000 x 10.000mm
重さ (CT)
Certified Gemstones
いいえ

 

Patrik's Minerals & Lapidary  

 

POLISHED ORTHOCERAS SPECIMEN

specimen has a nice domed polished face , natural unpolished back 

WEIGHT : 183.05 CTS 

SIZE  MM: 69 X 35 X 10

( 6 MM IS APPROX 1/4 INCH )

CODE : G  3962

 Orthoceras was an 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.

  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 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.  The siphuncle is the line running down the center from head to tail. The septa are the short curved lines that run across or side to side.  These straight shelled nautiloids ranged in size from less than a centimeter to more than 14 feet long!


配送業者 配送先Australia その他の国への配送
FedEx $12.00 / 7 $39.00 / 7
:国
FedEx 、 2以上のアイテムを含む注文で$12.00に割引されます
世界のその他の地域
FedEx 、 2以上のアイテムを含む注文で$39.00に割引されます
Registered Shipping $9.00 / 10 $15.00 / 18
:国
Registered Shipping 、 2以上のアイテムを含む注文で$9.00に割引されます
世界のその他の地域
Registered Shipping 、 2以上のアイテムを含む注文で$15.00に割引されます

patriksbeadsandgems
patriksbeadsandgems
Varsity Lakes 、 Australia
確認済み
2166フィードバック

  • collectorofopals
    collectorofopals
    ポジティブ

    Paid and shipped - no feedback left after 100 days

  • ginagee
    ginagee
    ポジティブ

    These are perfect for my purpose. Fast delivery.well packed too.

  • ginagee
    ginagee
    ポジティブ

    Lovely colour! Genuine aged item. Very well packed and fast delivery.

50%
クーポンコード Xmas50%
まで有効
30th Dec 2024

監査

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発送詳細

配送:
$15.00 18日 ( Registered Shipping経由)
発送元:
Australia

支払いオプション

  • paypal
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この販売者は、 Australiaでの取引に10.00%税金を追加します。

概要

リストタイプ : Standard
製品番号 : 368477
始まります : 19th December 2024 12:00 am PST
* すべての価格はUSDで表記されています