If the steering in your truck is getting loose, you might need to replace your idler arm or your pitman arm (or both). We'll show you how to replace them. If the steering in your truck is getting loose, you might need to replace your idler arm or your pitman arm (or both).
Ammonites are the most widely known fossil. They are cephalopods  and first appeared in the seas 415 million years ago, in the form  of a straight shelled creature known as â¦ Bacrites. They do not have  legs.
When did dinosaurs live? Dinosaurs lived between 230 and 65 million years ago, in a time known as the Mesozoic Era. This was many millions of years before the first modern humans, Homo sapiens, appeared. Scientists divide the Mesozoic Era into three periods: the Triassic, Jurassic and Cretaceous.