Dinosaurs

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Dinosaurs
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What are dinosaurs?

• Technically no such thing as dinosaurs
• Classification
• Class Reptilia (reptiles)
• Order Archosauria
• Suborders
• Saurrischia lizard hips
• Ornithischia bird hips

Dinosaurs in popular sense
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Order Saurischia

• Characterized by 3 part hip structure similar to
  that of lizards

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Who were the Theropods
Scientific Name Gallimimus Phylum Chordata
Class Dinosauria Theropoda
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Veolociraptor (Jurassic Park)
Scientific Name Velociraptor Phylum Chordata
Class Dinosauria Theropoda
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And T-Rex
Scientific Name Tyrannosaurus rex Phylum
Chordata Class Dinosauria Theropoda
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Who were the Theropods

• Earlier of the two groups
• Contained all of the meat eating dinosaurs of the
  Mesozoic
• Also contained some plant eaters having primitive
  characteristics

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Earliest forms of Theropods

• Coelurosauria

Maybe?
This is what we have to work with.
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Typical Coelurosauria Saltopus
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Coeleurosaurs

• Very successful in Mesozoic

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Archaeopteryx
Maybe?
Fossil
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Where are Archaeopteryx found?
Mostly in Germany
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Cretaceous Coelurosaurs

• Some species became very specialized

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Struthiomimus
Mmmmmm...dragonfly. In later years, I you will
see me on Sesame Street
Or an even scarier version
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Dromalosaurus The "raptors"
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Or?
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2nd Theropod Group

• Flesh-like spectacular forms
• Famous because of their starring role in Japanese
  movies

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Teratosaurus

• Earliest species - Triassic

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Teratosaurs
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Tyrannosaurides (T-Rex)