Which of the three geological formations exposed in the Como Bluff was named for a post office on the eastern side of the Bighorn Basin in Wyoming?  
Como Bluff: Como Bluff is a long ridge extending east-west, located between the towns of Rock River and Medicine Bow, Wyoming. Cloverly Formation: The Cloverly Formation is a geological formation of Early Cretaceous age (Aptian to Albian stage) that is present in parts of Montana, Wyoming, Colorado and Utah in the western United States.
i don't know