The Miasaura Peeblesaurum is a duck-billed dino found (so far) only on Egg Mountain in Chauteau, MT, USA. It is the first to prove that dinosaurs took care of their young and traveled in family groups. It is named Miasaura (duck-billed) and Peeblesaurum after the last name of the landowner whose land it was found on.

When I was a kid, I was a Junior rock hound, and belonged to a Junior Gem & Mineral Club. My group was instrumental in getting the Miasaura introduced to the Montana State Representatives as a possibility for Montana to be the first to have it's own State fossil. We got a lot of other people involved, and actual got the bill passed. Montana is the first and only state with an official State Fossil.