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Mammalian Adaptations

Mammalian Adaptations. MONOTREMES “Egg laying”. Duckbilled Platypus Anteater Echidna. Platypus/echidna Images from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html. MARSUPIALS Premature babies develop in pouch.

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Mammalian Adaptations

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  1. Mammalian Adaptations

  2. MONOTREMES“Egg laying” Duckbilled Platypus Anteater Echidna Platypus/echidna Images from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html

  3. MARSUPIALSPremature babies develop in pouch Most found in Australia/ New Guinea • Kangaroo • Wallaby Image from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html

  4. MARSUPIALS Only North American Marsupial • Oppossum

  5. PLACENTALEmbryos nourished inside mother by placenta 95% of all mammals are placental At least 18 orders Image from: http://antro.palomar.edu/animal/default.htm

  6. Specialized teeth vary with diet

  7. Grass eaters have different teeth than carnivores http://animaldiversity.ummzurich.edu/anat/tooth_introduction.html

  8. INCISORS- cut CANINES- grip, puncture, tear PREMOLARS- shread, cut, grind MOLARS- grind, crush Image from: http://antro.palomar.edu/animal/default.htm

  9. BALEEN Thin keratin plates that hang from the roof of the mouth and screen food from water Baleen Image from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html

  10. Echolocation Bats emit high frequency sound waves that bounce off objects Can determine size, distance, direction, speed Bats can fly without eyes, but NOT without ears

  11. ECHOLOCATION • Also used by some kinds of whales Image from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html

  12. RUMEN In cud chewers like cows, sheep, goats, giraffes First chamber of stomach containing bacteria to digest plants

  13. CECUM In NON cud chewers like horses, rabbits, rodents, elephants Small pouch off small intestine containing bacteria to digest plants

  14. Human appendix is vestigial cecum

  15. PRIMATES Larger Brain Grasping hand with fingernails instead of claws 2 forward facing eyes • Includes: • Gorillas • Chimps • Monkeys • Lemurs Gorilla Image from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html

  16. PRIMATES Humans are primates too!

  17. PINNIPEDS • Carnivores • streamlined body • flipper limbed Seals Walruses Sea lions

  18. UNGULATESMammals with Hooves Artiodactyla Even number of toes Moose, bison, deer, elk, goats, pigs, camels, sheep, cows Perissodactyla Odd number of toes Horses, zebras, rhinos

  19. CETACEANS Includes: whales, dolphins, porpoises

  20. PROBOSCIDEA Proboscis: Boneless trunked nose Only 2 speciesAsian elephant African elephant Image from: http://www.lth3.k12.il.us/tworivers/Pet%20Projects/steve/classification%20of%20animals%202/Page_39_Mammax.html

  21. CHIROPTERA BATS Only mammals that can fly

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