A Moment of Science
This description sure doesn't sound like the penguin we know today, but it is actually one of its great ancestors!
In recent years, palaeontologists have unearthed some of the smallest dinosaurs known - not bigger than 20 feet.
Until very recently, humans tended to reproduce before reaching full adult maturity, as did the dinosaurs. Learn more on this Moment of Science.
Do you know how the dinosaurs went extinct? Learn more on this Moment of Science.
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