In
1888, a man named Harry Seeley proposed a way of classifying dinosaurs
into two groups by looking at their hip structure, these groups are
called Saurischia (lizard hipped) and Ornithischia (bird hipped). The
two groups can be further broken down into sub-groups such as families,
sub-families and so on. Let’s take a look at some of the interesting
sub-groups and examples of the dinosaurs that are part of them.
Saurischia (lizard hipped dinosaurs)
Theropods
- The name Theropod means ‘beast foot’ and this group includes all of
the carnivorous (meat eating) dinosaurs. Although it might be
surprising, birds actually evolved from Theropods rather than from
Ornithischian (bird hipped) dinosaurs. Theropods moved on two legs and
include a number of scary looking but popular dinosaurs such as
Tyrannosaurus rex and Velociraptor.
Sauropods
- Sauropods evolved to walk on four legs and typically grew to
enormous sizes. They were herbivores (plant eaters) and included
classic dinosaurs such as the Diplodocus and Brachiosaurus.
Ornithiscia (bird hipped dinosaurs)
Thyreophora -
The name Thyreophora means ‘shield bearers’ and this group includes
armored dinosaurs such as the Stegosaurus and Ankylosaurus. They were
herbivores that lived from the early Jurassic Period to the late
Cretaceous.
Cerapods -
Cerapods included a variety of interesting groups such as Ceratopsian
(horned faced) dinosaurs like the Triceratops as well as Ornithopods
(bird footed) dinosaurs like the Iguanodon.
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Tuesday, 17 September 2013
Types of Dinosaurs Types of Dinosaurs
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