Reply To: Carrying the weight of the world Homepage › Forums › K-12 Fossils and Lessons Forum › Carrying the weight of the world › Reply To: Carrying the weight of the world October 27, 2016 at 8:17 pm #14803 Lisa LundgrenKeymaster Neat! Thanks for posting, @jeanette-pirlo. Do humans have an atlas as well? I’m wondering about comparative anatomy now! Like what does a T. rex atlas look like? Or a mammoth’s? Or an alligator’s? Do birds have atlases? I have many questions!