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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 l.jpg
MONOTREMES“Egg laying”

Duckbilled Platypus

Anteater

Echidna


Marsupials premature babies develop in pouch l.jpg
MARSUPIALSPremature babies develop in pouch

Found in Australia/ New Guinea

  • Kangaroo

  • Wallaby


Marsupials l.jpg
MARSUPIALS

Only North American Marsupial

  • Oppossum


Placental embryos nourished inside mother by placenta l.jpg
PLACENTALEmbryos nourished inside mother by placenta

95% of all mammals are placental

At least 18 orders


Teeth l.jpg
TEETH

Incisors- Chisel like teeth for cutting

Canines- Pointed teeth for puncturing/tearing

Premolars- Shred and grind

Molars- Flat teeth for grinding, crushing




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SALIVARY GLANDS

  • DIGESTION starts in the MOUTH

Image from:

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


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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


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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


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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 l.jpg
CECUM

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

Small pouch off small intestine containing bacteria to digest plants


Slide14 l.jpg

Human appendix is vestigial cecum


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Larger Brain

Grasping hand with fingernails instead of claws

2 forward facing eyes

PRIMATES

  • Includes:

  • Gorillas

  • Monkeys

  • Lemurs


Primates16 l.jpg
PRIMATES

Humans are primates too!


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PINNIPEDS

Carnivorous

streamlined body

flipper limbed

Seals

Walruses

Sea lions


Ungulates mammals with hooves l.jpg
UNGULATESMammals with Hooves


Cetaceans l.jpg
CETACEANS

Includes: whales, dolphins,

porpoises


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CHIROPTERA

BATS

Only mammals that can fly


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