DINASAUR FOSSILS

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DINASAUR Fossils

• PRESENTATION BY SRESTHO

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WHAT ARE FOSSILS?

• A fossil is any preserved remains, impression, or
  trace of any once-living thing from a past
  geological age. Examples include bones, shells,
  exoskeletons, stone imprints of animals or
  microbes, objects preserved in amber, hair,
  petrified wood, oil, coal, and DNA remnants.

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WHAT ARE DINOSAURS?

• Dinosaurs are a diverse group of reptiles of the
  clade Dinosauria. They first appeared during the
  Triassic period, between 243 and 233.23 million
  years ago, although the exact origin and timing
  of the evolution of dinosaurs is the subject of
  active research. They became the dominant
  terrestrial vertebrates after the
  TriassicJurassic extinction event 201.3 million
  years ago. came the dominant terrestrial
  vertebrates after the TriassicJurassic
  extinction event 201.3 million years ago

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HOW DO DINOSAUR TURN INTO FOSSILS?

• The dinosaur dies and is washed away in a flood.
  The body is buried in sediment (mud or sand) and
  eventually the body is covered. The soft parts of
  the body are destroyed leaving only bones.

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WHEN WAS THE FIRST DINOSAUR FOSSILS DISCOVERED?

• The first dinosaur fossil discovered in 1822 by a
  British geologist Gideon Mantell. These fossils
  were identified and named Iguanodon considering
  the similarities between the fossils and the
  bones of modern iguanas. In 1841, a British
  anatomist Sir Richard Owen coined the name
  'dinosaur.

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HOW MANY DINASAUR FOSSILS ARE DISCOVERED?

• Dinosaurs have always been an extremely varied
  group of animals according to a 2006 study, over
  500 non-avian dinosaur genera have been
  identified with certainty so far, and the total
  number of genera preserved in the fossil record
  has been estimated at around 1850.

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TYPES OF DINASAUR FOSSILS.

• SKULL
• VETERBRAE
• TAIL VETERBRAE
• RIBS
• TIBIA
• METATARSAL

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• R

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