Human Vs KentrosaurusImage cropped - click to view
Artwork showing the relative scale of humans and Kentrosaurus ('pointed lizard'). This animal, from Tanzania, lived around 152 million years ago during the Late Jurassic Period. It measured 5.5 m (18 ft) long and was herbivorous. Kentrosaurus belonged to a group of dinosaurs named after their prototype, the stegosaurids, armed with tail spikes or 'thagomizers' to protect themselves and deter predators.