Class Mammalia

Have Hair Nourish their young with milk from mammory glands Warm-blooded Four-chamber heart Live in a Variety of Habitats.

Mammals Lungs are large and almost fill the chest cavity. Posses a muscular diaphragm- enhances respiratory air flow.

Mammals Lung capacity and diaphragm gives mammals more oxygen for cellular respiration; therefore, mammals have more energy to move around.

Mammals Skin contains Mammary glands that produce milk for their young. Sweat glands that help to cool the skin and get rid of liquid waste

Mammals Brains are much larger, so Mammals Have increased options of response to stimuli Better at retaining information Learning from past behavior Most intelligent of the Vertebrates

Order Monotremata: Lays eggs Ex: Duckbill Platypus Aquatic Burrows Duck-bill, webbed feet Flat beaver-like tail Lays up to three eggs Nurses its young after hatching

Most mammals give birth to live young.

Order Marsupialia: Ventral Pouch Ventral Pouch that surrounds nipples on the abdominal wall. Live Birth Young are born as embryos and crawl to the pouches to grow while nursing Ex. Kangaroos, Koala, and Opossum

Placental Mammals Fetus develops entirely within the uterus Attached to and nourished by a placenta. Placenta receives nutrients from the mother’s blood

17 Orders of Placental Mammals

Order Insectivora Burrow Eat insects Long snouts Ex Shrews and Moles

Order Chiroptera Small Nocturnal Flyers Sonar Mechanism Ex. Bats

Order Rodentia Insect eaters or Herbivores Large incisors and missing canines Ex. Rats, Mice, Gophers, Squirrels, Porcupines, and Guinea Pigs

Order Lagomorpha Long ears Stubby tails Ex. Rabbits and Hares

Order Edentata Reduced teeth Long snouts Ex. Armadillos, Sloth, and Anteaters

Order Cetacea Large Aquatic Function in a wide range of depths and remain under water for several minutes Ex. Dolphins, Whales

Order Carnivora Flesh eaters Distinct dental pattern Ex. Lions, Cats, Dogs, Wolves, Bears, Raccoons, Skunks, Weasels, Otters

Order Pinnipedia Excellent Swimmers Form nests or rookeries (breading places) on islands or shores Four limbs modified into paddle-like flippers Seals, Walruses, and Sea Lions

Order Tubulidentata Long snouts Ex. Aardvarks

Order Proboscidea Thick skinned Long muscular nose Paired tusks Ex. Elephants

Order Sirenia Herbivores Aquatic Lack hind limbs Large flipper-like tail Ex. Manatees

Order Perissodactyla Herbivorous Odd number of toes covered in a hoof Ex. Horse, Zebra, Rhinoceros

Order Artiodactyla Even-toed hoofed Antlers or horns Ex. Cattle, sheep, goats, antelope, ox, giraffes, deer, pig

Order Primata Posture is often bipedal (two-legged) Opposable thumb Ex. Apes, Monkeys, Humans

Human Taxonomy Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Order: Primata Family: Homindea Genus: Homo Species: Sapiens