Orthoceras - 動物化石 - 30 cm - 21 cm

美丽的板块，展出来自摩洛哥的多只 Orthoceras 标本。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.

Orthoceras壳是它们最具标志性的特征。它由文石组成，文石也是许多现代软体动物壳中所含的矿物。随着时间的推移，通过沉积与矿化等地质过程，这些壳化石化，形成了今天我们欣赏的标本。

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.

***Display stand shown for illustrative purposes only; not included in the sale.