一块美丽的板块,包含来自摩洛哥的若干 Orthoceras 标本。这些海洋生物是地球上最早的生物形态之一。西北撒哈拉发现。\nOrthoceras 是已灭绝的头足类软体动物,属于一个现已消失的群体。These creatures lived in the oceans hundreds of millions of years ago, mainly during the Ordovician and Silurian periods.
一块美丽的板块,包含来自摩洛哥的若干 Orthoceras 标本。这些海洋生物是地球上最早的生物形态之一。西北撒哈拉发现。\nOrthoceras 是已灭绝的头足类软体动物,属于一个现已消失的群体。These creatures lived in the oceans hundreds of millions of years ago, mainly during the Ordovician and Silurian periods.