Amphibians Drawings & Dimensions

Amphibians, belonging to the class Amphibia, are cold-blooded vertebrates distinguished by their life cycle, splitting time between aquatic and terrestrial environments. They evolved from fish around 370 million years ago, bridging the gap between aquatic and land animals.

两栖动物，隶属于两栖纲，为冷血脊椎动物，其生命周期具有显著的二分性，生活于水生与陆地环境之间。约3.7亿年前，两栖动物由鱼类演化而来，填补了水生与陆生动物之间的鸿沟。