Manuel Quiring

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美丽的板块，展出来自摩洛哥的多枚 Orthoceras 标本。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，主要出现在奥陶纪和志留纪。它们的名字在希腊语中的意思是“直角的角”，指的是它们壳体呈细长圆锥形的独特形态。壳体分为腔室，由隔层分隔，并通过中筒管相连。
Orthoceras 的壳是它们最具特征性的特征。它由文石构成，这是一种在许多现代软体动物贝壳中也存在的矿物。随着时间的推移，经过沉积、矿化等地质过程，这些壳体化石化，形成了我们今天所欣赏的标本。
Orthoceras 化石是古代海洋生物的重要见证。研究它们可以帮助科学家重建史前生态系统，理解物种进化，并洞察塑造地球历史的重大变革。

-- metal display stand included

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 - 动物化石 - 29 cm - 21 cm  (没有保留价)

奥陶纪 (4.854-4.438 亿年) - 摩洛哥

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来自摩洛哥的 Orthoceras 标本板，含多枚 Orthoceras 化石，奥陶纪，天然状态，抛光处理，附金属展示底座，高29 cm，宽21 cm，原装/官方。

Orthoceras - 动物化石 - 29 cm - 21 cm (没有保留价)

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来自摩洛哥的 Orthoceras 标本板，含多枚 Orthoceras 化石，奥陶纪，天然状态，抛光处理，附金属展示底座，高29 cm，宽21 cm，原装/官方。

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