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Phylum Chordata: The Vertebrates
Transcript of Phylum Chordata: The Vertebrates
(Bony Fish) Chondrichthyes
(Cartilaginous Fish) Amphibia (Amphibians) Reptilia (Reptiles) Aves (Birds) Mammalia Monotremes Marsupials Placental Mammals Characteristics Lay leathery eggs
No nipples - milk secreted and babies lap it up. Characteristics Fetus is nourished with an organ grown in the mother's uterus called a "placenta".
Live birth. Nipples for nursing.
Young born at various stages of independence depending on species. Characteristics Live Birth. Nipples.
Babies born undeveloped and raised in pouch on mother. Characteristics Spinal cord
Endoskeleton of cartilage or bone Agnatha
(Jawless Fish) Hagfish Lampreys Sharks Rays Characteristics Bones of cartilage
Most marine Characteristics Characteristics Characteristics Characteristics Characteristics Lungs - breathe air
Mammary glands - produce milk Platypus Echidna Opossum Kangaroo Koala Sugar Glider Tazmanian
Scales on legs/feet
Claws (if they have feet)
Leather eggs (eggs develop within mother in the case of live birth)
Ectotherms Hard-shelled eggs Snakes Turtles & Tortoises Lizards Alligators &
Crocodiles No scales (smooth or bumpy skin)
Eggs without shells - must be in water
Hatchlings have gills
No claws Frogs & Toads Newts & Salamanders Skeletons of bone
Gills Elephants Giraffes Seahorse Moray Eel Yellow Tang Walleye Characteristics Sucker mouths - no jaws
Skin secretes slime for protection.
No scales Cats Phylum
Chordata Carolyn Lowe, PhD For more on Placental Mammals Click Here