Mammals
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Transcript of Mammals
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Ms. Carrizosa’s 4th grade classDecember 9, 2009
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Vertebrates (have a spine) however so do some reptiles and insects
Warm Blooded however so are fish and frogs
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Mammary glands (Produce milk to feed children)
Have hair
Lower jaw is single bone on both sides
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3 bones in middle ear
The main artery leaving the heart curves to the left
Have a diaphragm
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Kingdom – Animalia
Phylum – Chordata
Subphylum – Vertebrata
Class - Mammalia ◦ 5000 species
26 orders
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Prototheria or Monotremes (2 species)
Metatheria or Marsupials (275 species)
Eutheria or placental mammals (3982 species)
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4 mammalian groups fully aquatic
Nearly all mammals have baby-teeth Some exceptions include the anteater
Mammals use two bones for hearing that ancestors used for eating
The largest mammal on land is the African Bull Elephant
The tallest animal on the planet is the Giraffe
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http://www.earthlife.net/mammals/mammal.html
http://thewebsiteofeverything.com/ http://animaldiversity.ummz.umich.edu/
site/accounts/information/Mammalia.html