Lacking teeth, Struthiomimus likely fed on a mix of plants, fruits, and insects, easily digestible with its beak-like mouth. The dinosaur’s diet and behavior indicate it was an omnivorous forager.

From the time Struthiomimus was first described in 1917, paleontologists have been struck by the dinosaur’s similarities to flightless birds like emus. At a glance, the dinosaur looks like an ...

SIOUX CITY -- Tail and femur bones of the ostrich-like Struthiomimus, a frill from a Triceratops and the complete upper skull of a new dragonesque-dinosaur species are among the rare fossils ...