- 存货单位
- 尺寸(毫米)
- 32 x 11 x 11mm
- 重量 (cts)
- 24.9
- 颜色
-
OPALISED FOSSIL BELEMNITE
COOBER PEDY AUSTRALIA
Belemnitida (or belemnites) is an extinct order of squid-like cephalopods that existed from the Late Triassic to Late Cretaceous. Unlike squid, belemnites had an internal skeleton that made up the cone. The parts are, from the arms-most to the tip: the tongue-shaped pro-ostracum, the conical phragmocone, and the pointy guard. The calcitic guard is the most common belemnite remain. Belemnites, in life, are thought to have had 10 hooked arms and a pair of fins on the guard. The chitinous hooks were usually no bigger than 5 mm (0.20 in), though a belemnite could have had between 100 and 800 hooks in total, using them to stab and hold onto prey.
Belemnites formed the basis of the Mesozoic marine food chain, both the adults and the planktonic juveniles, and likely played an important role in restructuring marine ecosystems after the Triassic–Jurassic extinction event. They may have laid between 100 and 1,000 eggs. Some species may have been adapted to speed and swam in the turbulent open ocean, whereas others resided in the calmer nearshore and fed off the seafloor. The largest belemnite known, Megateuthis elliptica, had guards of 60 to 70 cm (24 to 28 in).
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- 存货单位
- 尺寸(毫米)
- 32 x 11 x 11 mm
- 重量 (cts)
- 24.9
- 颜色
-
OPALISED FOSSIL BELEMNITE
COOBER PEDY AUSTRALIA
Belemnitida (or belemnites) is an extinct order of squid-like cephalopods that existed from the Late Triassic to Late Cretaceous. Unlike squid, belemnites had an internal skeleton that made up the cone. The parts are, from the arms-most to the tip: the tongue-shaped pro-ostracum, the conical phragmocone, and the pointy guard. The calcitic guard is the most common belemnite remain. Belemnites, in life, are thought to have had 10 hooked arms and a pair of fins on the guard. The chitinous hooks were usually no bigger than 5 mm (0.20 in), though a belemnite could have had between 100 and 800 hooks in total, using them to stab and hold onto prey.
Belemnites formed the basis of the Mesozoic marine food chain, both the adults and the planktonic juveniles, and likely played an important role in restructuring marine ecosystems after the Triassic–Jurassic extinction event. They may have laid between 100 and 1,000 eggs. Some species may have been adapted to speed and swam in the turbulent open ocean, whereas others resided in the calmer nearshore and fed off the seafloor. The largest belemnite known, Megateuthis elliptica, had guards of 60 to 70 cm (24 to 28 in).
| 运输商 | 运送至:国家 | 运送到世界其他地区 | 联合运输( 澳大利亚 ) | 联合运输(世界其他地区) |
|---|---|---|---|---|
| Standard Shipping - Tracked |
|
|
|
|
| FedEx |
|
|
|
|
| DHL |
|
|
|
无法使用 |
sally Patel and natassa Patel have been in business for 35 years trueblueopal us family owned com....
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积极的Love this little fossil! The colours really pop and is so much better in person!! Thank you.
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积极的Gorgeous piece quick delivery
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积极的I love it thankyou
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积极的Beautiful thankyou