Relier Pairs Butting HeadsVersion en ligne ........ par Tea Cher 1 Bashing 2 Sturdy 3 Creature 4 Helmet 5 Relative 6 Fossilized 7 Million years 8 Layer 9 Unusual 10 Butting heads 11 Bones 12 Ancient fighting or arguing any living thing, such as an animal or a plant. strong and not easily broken. hard hat that is worn on the head to protect it from injury Plant or animal remains that are turned into stone very old, often dating back to a time before recorded history. a person who is related to you, such as a parent, child, sibling, or cousin. not common or expected. hard parts of the body that make up the skeleton. hitting something repeatedly with force. thin sheet of something, such as rock, soil, or clothing. 1,000,000 years