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Three dino types may be just three dino ages

Study suggests three dinos placed in separate taxa are actually from one group at different growth stages

By Lisa Grossman

- More than 2 years ago

Three dinosaurs that were thought to belong to very different groups are actually kids, teens and adults of the same genus, researchers say.

FAMILY PORTRAIT Three different dinosaurs — Dracorex, Stygimoloch and Pachycephalosaurus (clockwise from top left) — might actually be the juvenile, teen and adult of the same dino.