Biology 242: Lecture 6Spring 2001

Amniotes: Reptiles, Birds and Mammals

  1. Class Reptilia
    1. Characteristics
      1. Scales
      2. Ectothermic
      3. Internal fertilization
    2. Major groups
      1. Order Chelonia = turtles and tortoises
      2. Order Squamata = snakes and lizards
      3. Order Crocodilia = alligators and crocodiles

  2. Class Aves
    1. Characteristics
      1. Feathers
      2. High metabolic demands
      3. Endothermic
      4. Internal fertilization
    2. Major groups
      1. Order Anseriformes = swans, ducks and geese
      2. Order Galliformes = chickens, turkeys, quail and grouse
      3. Order Falconiformes = hawks, eagles, and vultures
      4. Order Passeriformes = perching song birds
    3. Adaptations
      1. Flight
      2. Migration
      3. Feet and bills

  3. Class Mammalia
    1. Characteristics
    2. Major groups
      1. Monotremes
      2. Marsupials
      3. Placental mammals
        1. Order Chiroptera = bats
        2. Order Insectivora = hedgehogs, shrews and moles
        3. Order Lagomorpha = rabbits and hares
        4. Order Rodentia = mice, rats and squirrels
        5. Order Cetacea = dolphins, porpoises and whales
        6. Order Primates = monkeys, lemurs and apes


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