Sails and Spines
Spinosaurus had a giant skin-covered sail sticking out of its back. Some other spinosaurs had sails, too. Still others had bumps or ridges. …
Spinosaurus had a giant skin-covered sail sticking out of its back. Some other spinosaurs had sails, too. Still others had bumps or ridges. …
Spinosaurus hunts in rivers, looking for a feast. It takes a lot of food to fill up this giant beast! …
An undersea volcano spews up so much lava and ash that it forms a new island. What happens next? Keep reading. …