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Mammals. Chapter 36. Section 1. Five key characteristics Some hair Diverse & specialized teeth Endothermic Mammary Glands placenta. Section 1. Mammals have diverse, specialized teeth Molars Incisors Premolars canine. Section 1. Mammary glands are used for milk production

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mammals

Mammals

Chapter 36

section 1
Section 1
  • Five key characteristics
  • Some hair
  • Diverse & specialized teeth
  • Endothermic
  • Mammary Glands
  • placenta
section 13
Section 1
  • Mammals have diverse, specialized teeth
  • Molars
  • Incisors
  • Premolars
  • canine
section 14
Section 1
  • Mammary glands are used for milk production
  • Weaning is done when baby animal can feed on their own
section 2 today s mammals
Section 2 Today’s Mammals
  • Monotremes
  • Most primitive
  • Order of Monotremata
  • Three living species
  • Platypus
  • Two species of Echidna
marsupials
Marsupials
  • Include wombats, kangaroos, wallaroos, koalas, and opossums
  • Are born days or weeks after fertilization and fully develop in a pouch
placental mammals
Placental Mammals
  • Placenta - allows diffusion of nutrients and oxygen into the fetus
  • Gestation Period - time when fetus is developing
today s placentals
Today’s Placentals
  • Rodentia
  • 40% of placentals
  • Teeth grow continually and are used for gnawing
  • Mice, rat, squirrel
slide9
Chiroptera
  • Bats the only mammal capable of flight
slide10
Insectivora
  • Eats insects
  • Includes the mighty shrew
slide11
Carnivora
  • Eat mostly meat
  • Include cats, dogs, bears, raccoons
slide12
Pinnipedia
  • Marine carnivores
  • Have flippers, insulating layer of blubber
  • Include the walrus
slide13
Primates
  • Monkey, human
  • Most advanced
slide14
Artiodactyla
  • Are called ungulates with even # of toes
  • Have a rumen and chew cud
  • Includes pigs, giraffes, sheep, cattle
slide15
Perissocactyla
  • Ungulates with an odd # of toes
  • Include horse, zebras, rhino
slide16
Cetacea
  • Live in water
  • Dolphins, porpoises, whale
  • have a plow hole used to breath
slide17
Lagomorpha
  • Rabbits and hairs
  • Teeth grow all the time
slide18
Sirenia
  • Barrel-shaped body
  • Manatees or called the sea cow
slide19
Proboscidea
  • Elephants the largest on land
slide20

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