Cephalothoracopagus monosymmetros--two female conjoined twins fused at head and thorax and delivered by Dr. Joseph Warrington in 1851--is one of the many amazing artifacts of medicine found at the Mütter Museum in Philadelphia. This museum, that houses the collection of the College of Physicians of Philadelphia (cephalothoracopagus monosymmetros girl(s) can be seen in 3D here).
