Mammal OrdersMammal OrdersMonotremes Monotremes Marsupials and Marsupials and

Placental MammalsPlacental Mammals

MonotremesMonotremesEgg laying mammalsEgg laying mammals

Incubate eggs like birdsIncubate eggs like birds

Most primitive of mammalsMost primitive of mammals

Ex) Spiny anteater, Duckbilled platypusEx) Spiny anteater, Duckbilled platypus

Spiny AnteaterSpiny Anteater

Duckbilled PlatypusDuckbilled Platypus

MarsupialsMarsupialsPouched animalsPouched animals

Undeveloped young at birthUndeveloped young at birth

Young carried for many monthsYoung carried for many months

Ex) Kangaroo, Koala, & Wombat Ex) Kangaroo, Koala, & Wombat

KangaroosKangaroos

Koala BearsKoala Bears

WombatWombat

Placental MammalsPlacental Mammals

Develop inside mother’s placentaDevelop inside mother’s placenta

Placenta is attached to the mother in Placenta is attached to the mother in her uterus.her uterus.

Gestation period differs b/t animalsGestation period differs b/t animals

Placental MammalsPlacental Mammals

Placental MammalsPlacental Mammals

Placental MammalsPlacental Mammals

Placental MammalsPlacental Mammals

Anteater Anteater [http://www.abc.net.au/science/scribblygum/June2000/img/f_echid10.jpg][http://www.abc.net.au/science/scribblygum/June2000/img/f_echid10.jpg]

[http://www.cse.cuhk.edu.hk/~phwl/mt/public/archives/old/photos/ll/original/echidna.jpg][http://www.cse.cuhk.edu.hk/~phwl/mt/public/archives/old/photos/ll/original/echidna.jpg]

Kangaroo Kangaroo [http://www.micktravels.com/australia/oreillys/027-[http://www.micktravels.com/australia/oreillys/027-female_eastern_grey_kangaroo_and_joey.jpg]female_eastern_grey_kangaroo_and_joey.jpg]

Koala BearsKoala Bears[http://images.google.com/imgres?imgurl=http://www.koala.net/media/koala[http://images.google.com/imgres?imgurl=http://www.koala.net/media/koala

%2520mums.jpg&imgrefurl=http://www.koala.net/media/%2520mums.jpg&imgrefurl=http://www.koala.net/media/indexjp.htm&h=1760&w=1362&sz=838&tbnid=NlObAKsdQWlEJM:&tbnh=150&tbnw=indexjp.htm&h=1760&w=1362&sz=838&tbnid=NlObAKsdQWlEJM:&tbnh=150&tbnw=116&hl=en&start=6&prev=/images%3Fq%3Dkoala%26svnum%3D10%26hl%3Den116&hl=en&start=6&prev=/images%3Fq%3Dkoala%26svnum%3D10%26hl%3Den%26lr%3D]%26lr%3D]

Wolf [http://fohn.net/wolf-pictures-facts/wolf-Wolf [http://fohn.net/wolf-pictures-facts/wolf-winter_1024x768.jpg]winter_1024x768.jpg]

Horse Horse [http://www.stylesdb.com/screenshots/avatars/sa[http://www.stylesdb.com/screenshots/avatars/samples/horses.jpg]mples/horses.jpg]

German Shepard German Shepard [http://thelittlelogcabin.homestead.com/files/Ger[http://thelittlelogcabin.homestead.com/files/GermanShepard.jpg]manShepard.jpg]

Fox [http://a3.cpimg.com/image/0F/5B/851983-Fox [http://a3.cpimg.com/image/0F/5B/851983-2053-032002CF-.jpg]2053-032002CF-.jpg]