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COMMONWEALTH Games 2010 Resource Available NOW!
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DINOSAURS Resource Pack / CD
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Around 70 million years ago Dinosaurs ruled the Earth. They survived for nearly 150 million years and then they disappeared off the face of the Earth. Many of them were gigantic, but some were tiny, the size of a chicken. Some were peaceful and ate only plants; others were fierce sharp toothed flesh eaters. Dinosaurs were reptiles. They had scaly skin and laid eggs. Many other reptiles shared the dinosaur world, swimming in the sea and flying in the air, but dinosaurs lived only on land. We know about them today because of bones and teeth being preserved in rocks and fossils.
Dinosaurs were not like any reptiles living now. They did have tough, scaly skin and a long tail like a lizard. But they did not move like lizards. They stood, walked and ran like a horse or ostrich.
Dinosaurs formed two great groups:
Saurischians (lizard-hipped) had hip bones pointing in different directions, like a lizard’s. All flesh eating dinosaurs and the largest of the plant-eating dinosaurs belonged to this group.
Ornithischians (bird-hipped) had hip bones lying together and pointing in the same direction, like those of a bird. There were plated, armoured, horned, bird footed and bone headed ornithischians. All of them ate plants.
Although Dinosaur remains have been around for millions of years, people knew nothing about these extraordinary creatures until the 19th Century. One of the first people to discover dinosaur bones was an English doctor called Gideon Mantell, who collected rocks and fossils as a hobby.
In 1820 Dr Mantell, with his wife Mary Ann, found some large teeth embedded in stone. Mantell had never seen teeth quite like them before, and when he found some bones nearby, he began to do some serious research into the find.
After a lot of work, Dr Mantell concluded that the teeth and bones belonged to a giant reptile, which he named Iguanodon, meaning “Iguana tooth”. Two other giant reptiles were discovered in Britain soon afterwards, named Megalosauras and Hylaeosauraus. But it was not until 1841 that these creatures were given a group name.
An eminent scientist of the time, Sir Richard Owen, declared that they should be called “Dinosaurs”, meaning “terrible lizards”. Thus began an exciting time of discovery in the scientific world.
The great dinosaur hunt was on…
This resource is available as a printed Pack or on CD-ROM. The cost is $35 (Incl P&P) per Pack or CD, or $55 for Pack and CD-ROM.
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Posted by Chris on Thursday, June 09 @ 00:00:00 EDT (826 reads)
(Read More... | Score: 4.42)
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