Trilobites, like those above, no longer crawl on the ocean floor.

They went extinct 245 million years ago.

However, their relatives are still living today.

Which of these animals do you think is most closely related to the trilobites of old?

The horseshoe crab is probably one of the closest living relatives of trilobites.

Snails are quite different from trilobites. They do not have segmented bodies or limbs.

Almost! Like trilobites, insects have segmented bodies, but they are not the most closely related.