PHOTO: Uncommon conjoined at-bat twins found in Brazil

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The corpses of uncommon conjoined at-bats found in Brazil have given scientists a closer conducted an investigation into a phenomenon that has only just ever been recorded twice before.

When Marcelo Rodrigues Nogueira, a postdoctoral investigate in biology at the State University of Northern Rio de Janeiro firstly realized the at-bat twinneds, he was “completely stupefied, ” he wrote in an email to Live Science. “I have treated numerous bats[ in my profession ], some with very impressive morphological characters( and bats are very special in this respect !), but none[ were as] surprising as these twins.”[ See Photos of the Rare Conjoined Bats Found in Brazil]

Only two other duets of conjoined bat twins have been reported in the technical literature, one in 1969 and another in 2015.

Although it’s not known exactly what causes identical twins to be conjoined, the phenomenon is known to occur when a fertilized egg splits too late. If an egg splits four to five days after being fertilized, two separate identical twins will structure. If, nonetheless, the splitting doesn’t follow until 13 to 15 daytimes after fertilization, the fertilized egg will exclusively separate partly, and the twinneds will be conjoined.

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