Monotremes - PowerPoint PPT Presentation

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Monotremes

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... kangaroo, wallaby, bandicoot, quokka, quoll, tasmanian devil, tasmanian tiger. About 280 species ... marsupial populations. Tasmanian Tiger. Diprotodon ... – PowerPoint PPT presentation

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Title: Monotremes


1
Monotremes Marsupials
2
Monotremes
  • Lay eggs with thick leathery shells
  • Eggs incubated by mother
  • No nipples lick the milk from hair and skin
    around mothers mammary glands
  • Only 3 species
  • Echidna (short long-beaked)

3
Platypus
  • Only one species
  • Lives in Australia
  • Swimming mammal
  • Feeds in rivers ponds
  • Webbed feet
  • Flat tail
  • Flat rubbery bill
  • Uses claws to dig tunnels in river banks for
    laying eggs

4
Marsupials
  • Koala, kangaroo, wallaby, bandicoot, quokka,
    quoll, tasmanian devil, tasmanian tiger
  • About 280 species
  • Pouched mammals
  • Give birth to tiny offspring
  • Only North American marsupial is the ?
  • opossum

5
Pouch
  • Young born days after fertilization
  • 3 days after fertilization a baby kangaroo climbs
    from its mothers womb to her pouch it is about
    the size of a peanut
  • The young marsupials latch onto a nipple in the
    pouch and start drinking milk

6
Endangered Extinct
  • At least 22 marsupials now extinct in Australia
  • Many more are currently endangered
  • THREATS imported exotic species of rabbits,
    foxes, cats
  • Habitat destruction has also hurt marsupial
    populations
  • Tasmanian Tiger
  • Diprotodon

7
The End
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