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Mammalian Adaptations. MONOTREMES “Egg laying”. Duckbilled Platypus Anteater Echidna. MARSUPIALS Premature babies develop in pouch. Found in Australia/ New Guinea Kangaroo Wallaby. MARSUPIALS. Only North American Marsupial Oppossum. PLACENTAL Embryos nourished inside mother by placenta.

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monotremes egg laying
MONOTREMES“Egg laying”

Duckbilled Platypus

Anteater

Echidna

marsupials premature babies develop in pouch
MARSUPIALSPremature babies develop in pouch

Found in Australia/ New Guinea

  • Kangaroo
  • Wallaby
marsupials
MARSUPIALS

Only North American Marsupial

  • Oppossum
placental embryos nourished inside mother by placenta
PLACENTALEmbryos nourished inside mother by placenta

95% of all mammals are placental

At least 18 orders

teeth
TEETH

Incisors- Chisel like teeth for cutting

Canines- Pointed teeth for puncturing/tearing

Premolars- Shred and grind

Molars- Flat teeth for grinding, crushing

salivary glands
SALIVARY GLANDS
  • DIGESTION starts in the MOUTH

Image from:

http://www.entnet.org/healthinfo/throat/salivary.cfm

baleen
BALEEN

Thin keratin plates that hang from the roof of the mouth and screen food from water

Image from:

http://home.iprimus.com.au/readman/whale.htm

echolocation
ECHOLOCATION

Bats can fly without eyes, but NOT without ears

Bats emit high frequency sound waves that bounce off objects

Can determine size, distance, direction, speed

rumen
RUMEN

In cud chewers like cows, sheep, goats, giraffes

First chamber of stomach containing bacteria to digest plants

Image from:http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/herbivores/rumen_anat.html

cecum
CECUM

In non cud chewers like horses, rabbits, rodents, elephants

Small pouch off small intestine containing bacteria to digest plants

primates

Larger Brain

Grasping hand with fingernails instead of claws

2 forward facing eyes

PRIMATES
  • Includes:
  • Gorillas
  • Monkeys
  • Lemurs
primates16
PRIMATES

Humans are primates too!

pinnipeds
PINNIPEDS

Carnivorous

streamlined body

flipper limbed

Seals

Walruses

Sea lions

cetaceans
CETACEANS

Includes: whales, dolphins,

porpoises

chiroptera
CHIROPTERA

BATS

Only mammals that can fly