The calf under study was a two-headed monster. It was born of a Reel Polled mother, at term, alive in utero, but died shortly after birth. Data concerning its sex and parentage are lacking. The body of the calf was normal, but the head parts were divided double from the region of the atlas. The heads were joined almost back to back, their mesial lines forming a broad "Y" with the vertebral column. Externally, despite the malformation, the symmetry of the two heads was striking.
Proceedings of the Iowa Academy of Science
©1936 Iowa Academy of Science, Inc.
"The Morphology of a Teratological Calf,"
Proceedings of the Iowa Academy of Science, 43(1), 369-371.
Available at: https://scholarworks.uni.edu/pias/vol43/iss1/137