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