这些人有腿，不在海里生活，他们在陆地上生活。
These people have feet and did not live in the sea: they lived on land.
现在，因为沧龙-巨蜥的祖先-是蛇进化时周围唯一的海洋蜥蜴，所以蛇应该是从在陆地上生活的蜥蜴进化而来。
Now, because the mosasaurs - the monitor lizards' ancestors-were the only Marine lizards around when snakes evolved, snakes must have evolved from lizards living on land.
科学家声称在阿根廷发现了曾生活在陆地上的最古老的植物的化石。
Fossils of the oldest plants ever to colonise land have been discovered in Argentina, scientists claim.
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