two heads". One of the heads, especially in three-headed animals, may be poorly developed and malformed, and not "participate" much. Two faces on one head Where twinning of the head itself is only partial, it can result in the condition known as diprosopus—one head with two faces. Earliest known occurrence The February 22, 2007, issue of the journal Biology Letters detailed the discovery of a 122 million-year-old fossil of a two-headed Hyphalosaurus lingyuanensis, marking the earliest known occurrence of axial bifurcation. List of notable occurrences Humans Dicephalic conjoined twins (dicephalus parapagus dipus) Lycosthenes described a pair of adult female twins who had separate necks but one body. Both heads ate, drank, slept, and spoke. They had to beg from door to door, "everie one giveing (sic) to her freely". They were banished to Bavaria due to fears pregnant women who saw them would give birth to similar children; nothing else is known of them. In 1990 Abigail and Brittany Hensel were born in Minnesota, United States. In 2000 Ayse and Sema Tanrikulu were born in Kahramanmaraş, Turkey In June 2000 Carmen and Lupita Andrade were born in Veracruz, Mexico. They later moved to the United States for healthcare with their parents. In 2003 Sohna and Mohna were born in India On June 13, 2003, twin girls named Huda and Manal Abdel Nasser Mohammed Mahmoud, were born in Asyut, Egypt In 2006 Syafitri was born in Indonesia In 2007 Mary Grace and Mary Divine Asis were born in the Philippines with only one heart. They died on April 30, 2008. On August 25, 2008, a baby boy named Kiron was born with two heads in south-western Bangladesh. The baby was described by the gynaecologist present at the birth as having "one stomach and he is eating normally with his two mouths. He has one genital organ and a full set of limbs". He died on August 28, 2009. In July 2009, dicephalic twins were born in Indonesia with two hearts but sharing all other internal organs. In 2011 Sueli Ferreira gave birth to a child with two heads in Campina Grande, in Paraíba state, Brazil, but the baby died a few hours later because of lack of oxygen to one of the heads. On December 19, 2011, a pair of male twins, Emanoel and Jesus Nazare, were born in Marajó Island, Brazil. The children had two heads, two legs and two