evaluation <ul><li>Very good </li></ul><ul><li>You are corect </li></ul>
Mammalia
Mammal Evolution <ul><li>Mammals are believed to have evolved from Reptiles during the late Jurassic period </li></ul>
Mammal Evolution <ul><li>The first true mammal was a small, shrew-like organism that coexisted with Dinosaurs </li></ul><u...
Mammal Evolution <ul><li>Mammal’s inner-ear bones probably evolved from modified ancestral reptile jaw bones </li></ul>
3 Major Reproductive Categories <ul><li>Monotremes </li></ul><ul><ul><li>Egg-laying mammals (Ex. Echidna + Platypus) </li>...
3 Major Reproductive Categories <ul><li>Marsupials </li></ul><ul><ul><li>Embryos born very early and nurse from inside mot...
3 Major Reproductive Categories <ul><li>Placentals </li></ul><ul><ul><li>Embryos develop inside the womb, receiving nutrie...
Mammal Characteristics <ul><li>Characterized by hair and mammary glands </li></ul><ul><li>Whales have very little hair </l...
Mammal Characteristics <ul><li>Mammalian brains are more developed and specialized (cephalized) than any other class of an...
Mammal Characteristics <ul><li>All mammals have special sweat glands that are modified for producing milk, called Mammary ...
Mammal Characteristics <ul><li>Mammals are Heterodontic </li></ul><ul><ul><li>Teeth are differentiated </li></ul></ul><ul>...
Mammal Orders   <ul><li>There are 19 orders of mammals </li></ul><ul><li>We will look at the characteristics of 14 of them...
Order: Insectivora <ul><li>Small pointed teeth, adapted mainly for eating insects </li></ul><ul><ul><li>Ex. Moles, Shrews,...
Order: Rodentia <ul><li>Nearly 50% of mammals are rodents </li></ul><ul><li>Have no canine teeth, but two very larger inci...
Order: Edentata <ul><li>Have no teeth </li></ul><ul><ul><li>Ex. Armadillos, Sloths, Anteaters </li></ul></ul>
Order: Carnivora <ul><li>Very diverse group, </li></ul><ul><li>Meat eaters </li></ul><ul><li>Canine teeth highly developed...
Order: Serenia <ul><li>Aquatic mammals that breathe through their mouth and nose </li></ul><ul><li>Herbivores </li></ul><u...
Order: Chiroptera <ul><li>Forelimbs adapted for flight </li></ul><ul><li>May find prey by echolocation </li></ul><ul><ul><...
Order: Lagomorpha <ul><li>Large incisor teeth </li></ul><ul><li>Hindlimbs larger than forelimbs </li></ul><ul><ul><li>Ex. ...
Order: Cetacea <ul><li>Fully aquatic mammals </li></ul><ul><li>Vestigial pelvic bones </li></ul><ul><li>Evolved from a wol...
Order: Cetacea <ul><li>Highly developed brain </li></ul><ul><li>Have a dorsal blow-hole </li></ul><ul><ul><li>Ex. Toothed ...
Order: Proboscidea <ul><li>Nose and top lip are highly enlarged into a muscular trunk for grasping items </li></ul><ul><ul...
Order: Primata <ul><li>Highly developed brains </li></ul><ul><li>Often bipedal </li></ul><ul><ul><li>Ex. Lemurs, Monkeys, ...
Order: Primata <ul><li>Humans are relatively new primates </li></ul><ul><li>We appear to share a recent common ancestor wi...
Order: Artiodactyla <ul><li>Hooves with even-numbered toes </li></ul><ul><li>Many of them are ruminants with a 4-chambered...
Order: Perissodactyla <ul><li>Have odd-numbered toes </li></ul><ul><ul><li>Ex. Horses, Tapirs, Rhinoceroses </li></ul></ul>
 
 
Upcoming SlideShare
Loading in …5
×

Mammals

481 views

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
481
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
25
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Mammals

  1. 1. evaluation <ul><li>Very good </li></ul><ul><li>You are corect </li></ul>
  2. 2. Mammalia
  3. 3. Mammal Evolution <ul><li>Mammals are believed to have evolved from Reptiles during the late Jurassic period </li></ul>
  4. 4. Mammal Evolution <ul><li>The first true mammal was a small, shrew-like organism that coexisted with Dinosaurs </li></ul><ul><ul><li>Ex. Hadrocodium fossil found in Northern China in 2002 </li></ul></ul>
  5. 5. Mammal Evolution <ul><li>Mammal’s inner-ear bones probably evolved from modified ancestral reptile jaw bones </li></ul>
  6. 6. 3 Major Reproductive Categories <ul><li>Monotremes </li></ul><ul><ul><li>Egg-laying mammals (Ex. Echidna + Platypus) </li></ul></ul>
  7. 7. 3 Major Reproductive Categories <ul><li>Marsupials </li></ul><ul><ul><li>Embryos born very early and nurse from inside mother’s pouch (Ex. Kangaroo, Koala) </li></ul></ul>
  8. 8. 3 Major Reproductive Categories <ul><li>Placentals </li></ul><ul><ul><li>Embryos develop inside the womb, receiving nutrients and O 2 from the mother via the Placenta </li></ul></ul><ul><ul><li>Newborns fed milk from mammary glands. </li></ul></ul>
  9. 9. Mammal Characteristics <ul><li>Characterized by hair and mammary glands </li></ul><ul><li>Whales have very little hair </li></ul>
  10. 10. Mammal Characteristics <ul><li>Mammalian brains are more developed and specialized (cephalized) than any other class of animals </li></ul>
  11. 11. Mammal Characteristics <ul><li>All mammals have special sweat glands that are modified for producing milk, called Mammary glands </li></ul>
  12. 12. Mammal Characteristics <ul><li>Mammals are Heterodontic </li></ul><ul><ul><li>Teeth are differentiated </li></ul></ul><ul><ul><li>Used for biting, grinding, tearing and crushing </li></ul></ul><ul><ul><li>Ex. Incisors, molars, canines, etc. </li></ul></ul>
  13. 13. Mammal Orders <ul><li>There are 19 orders of mammals </li></ul><ul><li>We will look at the characteristics of 14 of them </li></ul><ul><li>Order: Monotremata </li></ul><ul><ul><li>Lay Eggs (Ex. Echidna, Platypus) </li></ul></ul><ul><li>Order: Marsupiala </li></ul><ul><ul><li>Young grow in pouch (Ex. Koala) </li></ul></ul>
  14. 14. Order: Insectivora <ul><li>Small pointed teeth, adapted mainly for eating insects </li></ul><ul><ul><li>Ex. Moles, Shrews, Hedgehogs </li></ul></ul>
  15. 15. Order: Rodentia <ul><li>Nearly 50% of mammals are rodents </li></ul><ul><li>Have no canine teeth, but two very larger incisors </li></ul><ul><li>Almost all are herbivores </li></ul><ul><ul><li>Ex. Mice, Squirrels, Beavers </li></ul></ul>
  16. 16. Order: Edentata <ul><li>Have no teeth </li></ul><ul><ul><li>Ex. Armadillos, Sloths, Anteaters </li></ul></ul>
  17. 17. Order: Carnivora <ul><li>Very diverse group, </li></ul><ul><li>Meat eaters </li></ul><ul><li>Canine teeth highly developed </li></ul><ul><ul><li>Ex. Wolves, Bears, Raccoons, Otters, Skunks, Mongoose, Cats </li></ul></ul>
  18. 18. Order: Serenia <ul><li>Aquatic mammals that breathe through their mouth and nose </li></ul><ul><li>Herbivores </li></ul><ul><ul><li>Ex. Manatees and Dugongs </li></ul></ul>
  19. 19. Order: Chiroptera <ul><li>Forelimbs adapted for flight </li></ul><ul><li>May find prey by echolocation </li></ul><ul><ul><li>Ex. Insectivorous Bats, Old World Fruit Bats </li></ul></ul>
  20. 20. Order: Lagomorpha <ul><li>Large incisor teeth </li></ul><ul><li>Hindlimbs larger than forelimbs </li></ul><ul><ul><li>Ex. Rabbits and Pikas </li></ul></ul>
  21. 21. Order: Cetacea <ul><li>Fully aquatic mammals </li></ul><ul><li>Vestigial pelvic bones </li></ul><ul><li>Evolved from a wolf/bear-like land mammal </li></ul>
  22. 22. Order: Cetacea <ul><li>Highly developed brain </li></ul><ul><li>Have a dorsal blow-hole </li></ul><ul><ul><li>Ex. Toothed Whales, Baleen Whales </li></ul></ul>
  23. 23. Order: Proboscidea <ul><li>Nose and top lip are highly enlarged into a muscular trunk for grasping items </li></ul><ul><ul><li>Ex. Elephants </li></ul></ul>
  24. 24. Order: Primata <ul><li>Highly developed brains </li></ul><ul><li>Often bipedal </li></ul><ul><ul><li>Ex. Lemurs, Monkeys, Apes, Humans </li></ul></ul>
  25. 25. Order: Primata <ul><li>Humans are relatively new primates </li></ul><ul><li>We appear to share a recent common ancestor with chimpanzees </li></ul>
  26. 26. Order: Artiodactyla <ul><li>Hooves with even-numbered toes </li></ul><ul><li>Many of them are ruminants with a 4-chambered stomach </li></ul><ul><ul><li>Ex. Deer, Giraffe, Cattle, Pig, Camel, Hippo </li></ul></ul>
  27. 27. Order: Perissodactyla <ul><li>Have odd-numbered toes </li></ul><ul><ul><li>Ex. Horses, Tapirs, Rhinoceroses </li></ul></ul>

×