What is "tetrapods"

Usage examples of "tetrapods".

Why, little by little, did the vision of full‑sized concrete tetrapods marching over sea walk, four‑legged conquerors triumphing over the sea, capture him as surely as it had the gleaming doctor?

I tell you, my friend: you and I and our tetrapods: from the very oceans we shall bring forth soil!

Dinosaurs, whales, birds, humans, even fish—all are tetrapods, which clearly suggests they come from a single common ancestor.

Ninomiya is on a bluff in the middle of a town, and the beach below it is a narrow strip of sand chockablock with giant concrete tetrapods, looking like vastly magnified skeletons of plankton and intended to keep waves from washing up onto the busy coastal highway that runs between the beach and the station.