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