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.
Archaean Time (3800 to 2500 million years ago). The atmosphere that existed during Archean time would be toxic to most extant life on our planet. Also, rocks were just beginning to form at the crust of the earth. It is believed that life on earth made its appearance in the seas during Archaean time.