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.
club moss, horsetails, and ferns that were common 300 mya. 12. In what era were mountains formed? Paleozoic Era 13. When Pangaea formed, what type of exTncTon occurred? and the largest mass exTncTon in history wiped out approximately 90% of all marine animal species. 14. In what period did dinosaurs and mammals appear? Mesozoic Era 15. In what period did the Rocky Mountains form? Mesozoic Era 16. How long ago did the Cenozoic period arise? 65 million years, and counTng (includes present Tme) 17. How did the Great Lakes form? Â±he Great Lakes form as ice melts 18. How long has there been a recorded human history?