REVIEW OF LITERATURE:
Animals that have been claimed to be subject of superfetation include rodents (mice and rats), farm animals(horses and sheep), marsupials(kangaroos and sugar gliders), fish (poeciliid) and rearely primates(humans).
In humans, reports of superfetation were documented as follows:
In 1992, Taylor and Evan Barth conceived 4 weeks apart were born in Hawaii USA to Michelle and John Barth. Taylor, the one conceived later was born first.
In 2007, Ame and Lia Herrity conceived 3 weeks apart was born in the United Kingdom to Amelia Spence and George Herrity.
In May 2007, Harriet and Thomas Mullineux also conceived 3 weeks apart, were born in Benfleet, Essex UK to Charlotte and Matt Mullineux.
In 2009, Todd and Julia Grovenburg of Forth Smith, Arkansas received international media attention for Mrs. Grovenburg’s conception of additional child while already pregnant with a child conceived two and a half weeks earlier.
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