Mammals www.assignmentpoint.com

Section 1 Five key characteristics Some hair Diverse & specialized teeth Endothermic Mammary Glands placenta www.assignmentpoint.com

Section 1 Mammals have diverse, specialized teeth Molars Incisors Premolars canine www.assignmentpoint.com

Section 1 Mammary glands are used for milk production Weaning is done when baby animal can feed on their own www.assignmentpoint.com

Section 2 Today’s Mammals Monotremes Most primitive Order of Monotremata Three living species Platypus Two species of Echidna www.assignmentpoint.com

Marsupials Include wombats, kangaroos, wallaroos, koalas, and opossums Are born days or weeks after fertilization and fully develop in a pouch www.assignmentpoint.com

Placental Mammals Placenta - allows diffusion of nutrients and oxygen into the fetus Gestation Period - time when fetus is developing www.assignmentpoint.com

Today’s Placentals Rodentia 40% of placentals Teeth grow continually and are used for gnawing Mice, rat, squirrel www.assignmentpoint.com

Bats the only mammal capable of flight Chiroptera Bats the only mammal capable of flight www.assignmentpoint.com

Includes the mighty shrew Insectivora Eats insects Includes the mighty shrew www.assignmentpoint.com

Include cats, dogs, bears, raccoons Carnivora Eat mostly meat Include cats, dogs, bears, raccoons www.assignmentpoint.com

Have flippers, insulating layer of blubber Include the walrus Pinnipedia Marine carnivores Have flippers, insulating layer of blubber Include the walrus www.assignmentpoint.com

Primates Monkey, human Most advanced www.assignmentpoint.com

Are called ungulates with even # of toes Have a rumen and chew cud Artiodactyla Are called ungulates with even # of toes Have a rumen and chew cud Includes pigs, giraffes, sheep, cattle www.assignmentpoint.com

Ungulates with an odd # of toes Include horse, zebras, rhino Perissocactyla Ungulates with an odd # of toes Include horse, zebras, rhino www.assignmentpoint.com

Dolphins, porpoises, whale have a plow hole used to breath Cetacea Live in water Dolphins, porpoises, whale have a plow hole used to breath www.assignmentpoint.com

Lagomorpha Rabbits and hairs Teeth grow all the time www.assignmentpoint.com

Manatees or called the sea cow Sirenia Barrel-shaped body Manatees or called the sea cow www.assignmentpoint.com

Elephants the largest on land Proboscidea Elephants the largest on land www.assignmentpoint.com