Triceratops Horn Took a Million Years to Develop

July 1, 2014 1:37 PM

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A study of Triceratops fossils at Hell Creek Formation in Montana has shown new insight into the evolution of the dinosaur species.

Researchers from Montana State University examined 50 skulls of two known Triceratops species, and based on morphological differences and placement in the strata, decided that one species transformed into the other, according to a press release issued by the university.

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