四足动物

The discovery of a tetrapod trackway in the sandstone suggests early vertebrates moved from water to land.
在砂岩中发现的四足动物足迹表明早期脊椎动物从水生环境转移到了陆地上。
The evolution of tetrapods marked a significant milestone in the history of life on Earth, enabling animals to conquer new habitats.
四足动物的进化标志着地球上生命历史的一个重要里程碑，使动物能够征服新的栖息地。
Ichthyostega is one of the earliest known tetrapods, providing insights into the transition from aquatic to terrestrial living.
Ichthyostega是最为人所知的早期四足动物之一，为研究从水生到陆生生活的过渡提供了洞见。
The fossil record shows tetrapods diversified greatly during the Devonian period, giving rise to a wide range of forms.
化石记录显示，在泥盆纪期间，四足动物极大地多样化，产生了各种各样的形态。
Tetrapods possess limbs with digits, a key adaptation for supporting their bodies on land.
四足动物拥有带有指（趾）的四肢，这是支撑它们在陆地上身体的关键适应性特征。
The study of tetrapod locomotion helps us understand how they adapted to different environments and evolved complex movements.
研究四足动物的运动方式有助于我们理解它们如何适应不同环境并发展出复杂的运动方式。
Some modern tetrapods, like whales and dolphins, have returned to an aquatic lifestyle, showing evolutionary reversals.
一些现代四足动物，如鲸鱼和海豚，已经回到了水生生活方式，这表明了进化的逆转现象。
The lungs of tetrapods, inherited from their fish ancestors, were crucial for呼吸 on land.
四足动物的肺是从其鱼类祖先那里继承下来的，对于在陆地上呼吸至关重要。
The development of tetrapod embryos reveals stages reminiscent of their ancient fish lineage.
四足动物胚胎的发育揭示了与其古代鱼类祖先相似的阶段。
Paleontologists often search for tetrapod fossils in ancient river deltas, where sedimentation preserved these ancient creatures.
古生物学家经常在古代河口三角洲寻找四足动物的化石，因为那里的沉积物保存了这些古老的生物。