Sullivan Halipré

化石拍賣（室內收藏家）

美丽的板块，展示来自摩洛哥的多件 Orthoceras 化石。这些古代海洋动物是地球上最早的生命形态之一。它们在西北撒哈拉被发现。Orthoceras 是已灭绝的头足类软体动物，属于一个早已消失的群体。这些海洋生物在数亿年前的海洋中生活，主要分布在奥陶纪和志留纪。它们的名字在希腊语中的意思是“直角角角”，指的是它们壳体的独特细长圆锥形。壳体被分隔成若干腔室，腔室之间以隔片分隔，并由一个中央管体相连。Orthoceras 的壳是它们最具特征的特征。它由文石质的阿格耐石组成，这种矿物也在许多现代软体动物的壳中发现。随着时间的推移，经过沉积、矿化等地质过程，这些壳体逐渐化石化，形成了我们今天所欣赏的标本。Orthoceras 化石是古代海洋生物的珍贵见证。研究它们，科学家能够重建史前生态系统、理解物种进化，并深入了解塑造地球历史的重大变化。

-- 金属展示架包含在内

Bellissimo piastra con diversi esemplari di Beautiful slab featuring multiple Orthoceras specimens from Morocco. These ancient marine animals were among the earliest life forms to inhabit the planet. Discovered in the northwestern Sahara.
Orthoceras are extinct cephalopod mollusks belonging to a long-lost group. These marine creatures lived in the oceans hundreds of millions of years ago, primarily during the Ordovician and Silurian periods. Their name, meaning “straight horn” in Greek, refers to the distinctive elongated, conical shape of their shells. The shell was divided into chambers separated by septa and connected by a central siphuncle.
The Orthoceras shell is their most characteristic feature. It was composed of aragonite, a mineral also found in the shells of many modern mollusks. Over time, through geological processes such as sedimentation and mineralization, these shells fossilized, forming the specimens we admire today.
Orthoceras fossils are valuable witnesses to ancient marine life. Their study allows scientists to reconstruct prehistoric ecosystems, understand species evolution, and gain insight into the major changes that have shaped Earth’s history.

-- metal display stand included

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Orthoceras - 動物化石 - 28 cm - 16 cm

奧陶紀（4.854-4.438憶年） - 摩洛哥

義大利

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Orthoceras - 動物化石 - 28 cm - 16 cm

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