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Old March 15th, 2016 #12
alex revision
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Is that dino a boy or a girl? Pregnant T. rex might help identify sexes.

Researchers have confirmed a Tyrannosaurus rex was ready to lay eggs within weeks of her death. Having a definitively female dinosaur skeleton could yield clues as to how to sex-type other specimens.

Researchers have found a Tyrannosaurus rex that was pregnant when it died some 68 million years ago – a discovery that could help paleontologists figure out how to distinguish between male and female therapod dinosaurs.

http://www.csmonitor.com/Science/201...identify-sexes