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