I, on the other hand, didn't know, until quite recently, that insects had three body segments and six legs.

Often these parts are repeated, such as fingers, ribs, and body segments.

Eight short, segmented legs are attached to the first body segment.

And wasn't he supposed to have only two arms and one body segment?

There are 11 body segments, each with a pair of walking legs and gills.

They have one pair per body segment, and 20 to 30 segments is normal.

Behind the head of the eurypterids were twelve body segments.

It has around 20 body segments and small, round eyes.

Then they threw the upper legs forward and toppled over, moving all body segments together.

They have a head and a long trunk of up to forty-two similar body segments.