Magnificent Mammals

1
Magnificent Mammals

• Zoology
• Vertebrates Unit

2
Classificationof Mammals

• Mammals are in the
• Kingdom Animalia
• Phylum Chordata
• Subphylum Vertebrata
• Class Mammalia

3
General Characteristics of Mammals

• Mammals have
• Hair (from a lot to a little)
• Specialized Teeth
• Endothermic bodies (warm-blooded, maintain
  constant body temperature
• Mammary Glands (used to feed and care for newborn
  young)
• Placenta (most have thesesupports and protects
  the developing embryo)
• Diaphragm (muscle that is used for breathing)

4
Specialized Teeth in Mammals

• Mammals have specialized teeth.
• Typically begin with a milk teeth set that
  they lose to make room for permanent teeth

5
Types of Teeth

• The shape of mammal teeth depends on the function
  of that tooth.
• The three main types of teeth are
• Incisorsbiting
• Caninesstabbing and holding
• Molarscrushing and grinding

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If the tooth fits

• Different mammals have different types of teeth
  depending on their diet.
• Predators have large canines.
• Herbivores have large, flat molars.

7
Three Main Types of Mammals

• Monotremes (lay eggs)
• Marsupials (have pouches used to care for young)
• Placentals (have a uterus and placenta)

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Order Monotremata

• Egg-laying mammals only found in Australia
• Have reptilian characteristics like a cloaca and
  egg laying
• Have mammalian features like hair and mammary
  glands

9
Order Marsupiala

• Young are born in an immature state and babies
  develop in a pouch
• Most are found in Australia but the opossum is
  located on other continents
• Examples kangaroo, wallaby, tasmanian devil,
  koala, opossum

10
Placental Mammals

• Consist of animals in many different orders
• Have a gestation period where the developing baby
  spends a specific time in the uterus
• Have a placenta that is a special organ that
  surrounds and protects the developing baby and
  allows nutrients to pass from mom to baby
• Some are domesticated and bred by humans, who are
  also placental mammals.

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Order Rodentia

• Placental mammal
• Teeth specialized for gnawing
• Examples mouse, rat, beaver

12
Order Chiroptera

• Placental mammal
• Fly with a membranous wing
• Use echolocation use sound waves to locate prey
  and objects
• Examples bats

13
Order Insectivora

• Placental mammal
• Have long noses
• Mainly eat insects
• Examples shrew, mole

14
Order Carnivora

• Placental mammal
• Large carnivores
• Hunt for food
• Examples dog, cat. Fox, bear, raccoon

15
Order Primate

• Adapted for living in trees
• Intelligent
• Opposable thumbs
• Examples chimpanzee, spider monkey, humans

16
Order Artiodactyla

• Placental mammal
• Ungulatehave hooves
• Even-toed
• Large rumen in stomach that helps break down
  plant material
• Examples sheep, cow,

17
Order Perissodactyla

• Placental mammal
• Ungulate (has hooves)
• Odd toed
• Examples horses, rhinoceros

18
Order Cetacea

• Placental mammal
• Marine mammals
• Use echolocation
• Have blowhole to release gases
• Examples whales, dolphins

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Order Lagomorpha

• One pair of long incisors
• Legs specialized for hopping
• Examples rabbits and hares

20
Order Sirenia

• Placental mammal
• Marine mammals that live in shallow water
• Examples manatee, dugong

21
Order Proboscidea

• Proboscis (trunk)
• Many have long incisors (tusks)
• Examples elephants