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"The nice thing about this new species is that we have an articulated set of jaws which almost never happens and we could see that the third anterior tooth is curved out, just like in the tooth row of mako sharks today," he said.

Reconstruction of Nigersaurus by Tyler Keillor, 2007 The flesh model was also full of challenges, like trying to figure out what was happening at the oral margins behind that anterior tooth row.

The anterior tooth is 3.0 mm. long; the posterior tooth is 3.5 mm. long.