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fossil – n. the mineralized remains of plants or animals that lived a long time ago
malformed – adj. not having the expected shape because of some problem affecting growth or development
tumor – n. a mass of tissue in the body that is made up of cells that are not normal
lame – adj. unable to walk normally
signature – n. a sign that confirms something's identity
horn – n. a hardened growth on the head of some animals such as cattle, goats and sheep
complication – n. a health problem that arises in addition to an existing one
mythical – adj. imaginary, something told about in stories but that is not real
