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