adj.古生代的，古生代时期

The Paleozoic Era spanned from around 541 to 252 million years ago, marking the time of the first complex life on land.
古生代的时间跨度大约从5.41亿年到2.52亿年前，是陆地上复杂生物开始出现的时代。
During the Paleozoic, marine animals like ammonites and corals flourished in the oceans.
在古生代期间，海洋生物如菊石和珊瑚大量繁衍。
The Devonian period, part of the Paleozoic, is known for the rise of fish and the appearance of the first true tetrapods.
德文纪，古生代的一个时期，以鱼类的兴起和第一种真正四足动物的出现而闻名。
Coal deposits found today were formed during the Paleozoic era, when forests covered much of the Earth's surface.
当今发现的煤炭层是在古生代形成，那时地球上覆盖着大片森林。
The Ordovician-Silurian extinction event wiped out many marine species during the Paleozoic.
古生代的奥陶纪-志留纪灭绝事件导致许多海洋生物消失。
Paleozoic rocks often contain fossils of trilobites, a group of extinct arthropods that dominated the seas.
古生代岩石中常常含有三叶虫化石，这是一种已灭绝的节肢动物，曾在海洋中占据主导地位。
The Paleozoic was a time when the supercontinent Pannotia existed, uniting most of the Earth's landmass.
在古生代，超级大陆潘诺尼亚存在，几乎占据了地球上的大部分陆地。
The Cambrian explosion, a burst of biodiversity, occurred at the beginning of the Paleozoic Era.
喀麦隆爆发（生物多样性大爆发）发生在古生代初期。
Paleozoic forests were dominated by lycopods and ferns, which provided crucial habitats for early life forms.
古生代的森林主要由鳞木和蕨类植物统治，为早期生命形式提供了重要的栖息地。
The Paleozoic climate was generally cooler and more humid than in later geological periods.
古生代的气候通常比后来的地层时期的气候更凉爽湿润。