Polycephaly is the condition of having more than one head. The term is derived from the Greek stems poly meaning "many" and kephale meaning "head". A polycephalic organism may be thought of as one being with a supernumerary body part, or as two or more beings with a shared body.Two-headed animals (called bicephalic or dicephalic) and three-headed (tricephalic) animals are the only type of multi-headed creatures seen in the real world, and form by the same process as conjoined twins from monozygo

Polycephaly is the... - Insufferably Intolerant Science Nerd

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