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Phylum C hordata

Phylum C hordata. C haracteristics. Hollow nerve chord Notochord Gill slits/Pharyngeal pouches Digestive tube Post anal tail. Group of Vertebrates. Fishes Amphibians Reptiles Birds Mammal. Fishes. Water dwelling vertebrates that may have scales, fins and throats with gill slits.

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Phylum C hordata

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  1. Phylum Chordata

  2. Characteristics • Hollow nerve chord • Notochord • Gill slits/Pharyngeal pouches • Digestive tube • Post anal tail

  3. Group of Vertebrates • Fishes • Amphibians • Reptiles • Birds • Mammal

  4. Fishes • Water dwelling vertebrates that may have scales, fins and throats with gill slits. • Close circulatory system. • Contains tube like kidneys. • Most species have separate males and females. • External fertilization.

  5. Classes of Fish • Class Agnathostomata (Lampreys and Hagfishes) • Class Chondrichthyes (Shark, Rays, and Skates) • Class Osteichthyes(Tuna, Carp, Salmons, Stugeons)

  6. Class Agnathostomata

  7. Characteristics • Absence of jaws • Lack paired fins (Pelvic and pectoral) • Skeleton made of cartilage • Round eel-like body with a compressed caudal fin

  8. Characteristics • Soft skin devoid of scales • Lack swim bladders and gill covers (Operculum) • Two chambered heart • Lateral lines • No external ears and eyelids instead Otoliths • External Fertilization • Oviparous

  9. Class Chondrichthyes • Great white sharks swim constantly with their mouth slightly open to allow water to pass in and out through their gills. • Source: http://channel.nationalgeographic.com/ Carcharadoncarcharias

  10.   The manta ray is the largest ray and one of the five largest species of fish in the world. • Manta is a Spanish word meaning “blanket.”

  11. Characteristics • Skeleton made of cartilage • Body covered with triangular placoid scales • Ventral subterminal mouth with several rows of triangular teeth.

  12. Characteristics • Internal fertilization • Ovoviviparous • Two chambered heart • No external ears and eyelids

  13. Class Osteichthyes Yellow Fin Tuna

  14. White Sturgeon

  15. Carp

  16. Salmon

  17. Characteristics • Skeleton made of bones • Lateral lines • Two chambered heart • Operculum covering the gills • Swim bladder

  18. Characteristics • Paired fins made of rays and spines or lobed fins lacking the rays and spines. • Various types of scales (ctenoid, ganoid, cycloid) • External fertilization • Spawning and oviparous • No external ears and eyelids

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