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Phylum Chordata Prezi
Transcript of Phylum Chordata Prezi
Dorsal nerve cord
Pharyngeal pouches or gill slits
Postanal tail Subphylums Characteristics Cephalochordata Lancelets
Approximately two dozen blade shaped animals
Retain same characteristics thorughout life Urochordata Tunicates or sea squirts Larve Possess all chordate characteristics Adults Only have pharyngeal pouches Vertebrata Distinguishing Characteristics
Cranium to protect brain
Endoskeleton made of bone or cartlidge Class Agnatha Jawless Fish Hagfish Lamprey Class Chondrichthyes Cartilaginous Fish Sharks Skates Rays Class
Osteichthyes Bony Fish Cruician Carp Coelancanth Class
Amphibia Newt Salamander Frog Amphibians Class
Reptila Reptiles Turtles & Tortises Crocodiles & Alligators Lizards Snakes Class
Aves Birds Penguins Flamingoes Owls Vulture Class
Mammalia Mammals Order
Monotremata Egg laying mammals
Most primitive of all mammals
Only three species left
One platypus Anteater Platypus Order Marsupialia 250 species
Young develop in pouch Opossum Kangaroo Placental Mammals Diverse group composed of at least 18 orders
95% of mammals
Live on land and in water Humans Dolphins