The
ammonite fossil was a prized discovery for the paleontologist.
这块菊石化石是古生物学家的珍贵发现。
Ammonites, with their spiral shells, were abundant in the Mesozoic era seas.
菊石以其螺旋形的壳,在中生代的海洋中极为丰富。
The intricate patterns on the
ammonite's shell fascinated the young boy.
菊石壳上复杂的图案迷住了那个小男孩。
Scientists use
ammonite fossils to date sedimentary rocks.
科学家利用菊石化石来确定沉积岩的年代。
The
ammonite became extinct alongside the dinosaurs at the end of the Cretaceous period.
菊石与恐龙一起在白垩纪末期灭绝了。
The polished
ammonite fossil made a unique piece of jewelry.
磨光的菊石化石成为了一件独特的珠宝。
Ammonites are an index fossil, helping researchers understand ancient environments.
菊石是一种指示化石,帮助研究人员了解古代环境。
The
ammonite's chambered shell allowed it to control its buoyancy in the water.
菊石的腔室壳使它能在水中控制浮力。
Fossil hunters often seek
ammonites along the coastal cliffs where they are commonly found.
化石猎人常在海岸悬崖边寻找菊石,因为那里常见到它们。
The discovery of a new species of
ammonite can shed light on evolutionary history.
发现新的菊石化石种类可以揭示进化史上的新信息。
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