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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Found in Australia/ New Guinea
Only North American Marsupial
95% of all mammals are placental
At least 18 orders
Incisors- Chisel like teeth for cutting
Canines- Pointed teeth for puncturing/tearing
Premolars- Shred and grind
Molars- Flat teeth for grinding, crushing
Thin keratin plates that hang from the roof of the mouth and screen food from water
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
In cud chewers like cows, sheep, goats, giraffes
First chamber of stomach containing bacteria to digest plants
In non cud chewers like horses, rabbits, rodents, elephants
Small pouch off small intestine containing bacteria to digest plants
Human appendix is vestigial cecum
Grasping hand with fingernails instead of claws
2 forward facing eyesPRIMATES
Humans are primates too!
Includes: whales, dolphins,
Only mammals that can fly