Ms. Carrizosa’s 4th grade classDecember 9, 2009

Vertebrates (have a spine) however so do some reptiles and insects

Warm Blooded however so are fish and frogs

Mammary glands (Produce milk to feed children)

Have hair

Lower jaw is single bone on both sides

3 bones in middle ear

The main artery leaving the heart curves to the left

Have a diaphragm

Kingdom – Animalia

Phylum – Chordata

Subphylum – Vertebrata

Class - Mammalia ◦ 5000 species

26 orders

Prototheria or Monotremes (2 species)

Metatheria or Marsupials (275 species)

Eutheria or placental mammals (3982 species)

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

http://www.earthlife.net/mammals/mammal.html

http://thewebsiteofeverything.com/ http://animaldiversity.ummz.umich.edu/

site/accounts/information/Mammalia.html