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  • The Age of Dinosaurs
  • What are the Dinosaurs?
  • The Diversity of Dinosaurs
  • The Dinosaur Family
  • Oviraptor: Dinosaur with a weird head
  • Oviraptor: Thief or Mom?
  • T-rex: King of Predators
  • Velociraptors: Pack Hunter of the Mesozoic
  • Euophocephalus: Well-armored-headed Dinosaur
  • Photo of galleries, exhibit.....(promotion only)
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    ::: Exhibition
    * What are the Dinosaurs?
    Tyrannosaurus rex

    Within the vertebrate family, dinosaurs belong to the ornithodiran (bird-necked) of the archosaur (ruling dinosaur), which is a sub-group of the diapsid reptilian amniotes. The key to the evolution of dinosaurs is modification in locomotion. These changes included a fully opened socket in the hipbones and the fitting of the ball-like head of the thighbone to the hip. Which resulted in dinosaurs an erect posture, other than the sprawling posture of the related reptiles. Dinosaurs first appeared on earth about 230 million years ago. Until their extinction about 65 million years ago, they lived for more than 160 million years. In contrast, our own evolutionary history is merely a few million years. We used to think that sluggishness and poor adaptation were the main causes of the extinction of the dinosaurs. Recent scientific findings, however, indicate that dinosaurs could be very agile and had well-developed brains. Consequently, scientists tend to agree that a large-scale catastrophic event was involved and the disappearance of dinosaurs was just bad luck. There are relatives of the dinosaurs still living today. The crocodiles are the closest relatives of dinosaurs; both are archosaurians. Many scientists agree that birds are the direct descendants of dinosaurs.

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