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Dinosaurs died out 65 million years
. We don't really know what they sounded like. Movies show dinosaurs making all
of roars and
, but these are
, not real. A new
gives us a better
of what dinosaurs sounded like. Scientists examined a
, 78-million-year-old
from a dinosaur called an ankylosaur. The fossil has an
of the ankylosaur's voice box. The
of this means it
made bird-like sounds.