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— > CHORDATA = (@) UROCHORDATA t— Notochord present only in larval tail — Examples: © Ascidian ¢ Salpa * Doliolum (2) CEPHALOCHORDATA Notochord extends from head to tail. Present throughout life. — Example: Le Branchiostoma (Amphioxus / Lancelet) @) VERTEBRATA DIVISION +——— Agnatha (Jawless) L— Class: Cyclostomata © Ectoparasite Elongated body 6-15 gill slits Circular mouth without jaw Cartilaginous endoskeleton Closed circulation Marine, but migrate to fresh water for Spawning (e99 laying), and dies after few days © Development — indirect L. Examples: ie "Patron zon ( Lamprey) Myaine! (Hagfish) U——. Gnathostomata ( Jaw- bearing ) SUPERCLASS UL Pisces L— Class: Chondrichthyes (Cartilaginous fishes) ® Marine © Streamlined bod e Cartilaginous spielen © Ventral mouth | 5 © No operculum ‘a ——— — = =) =(CHORDATA)= * + PISCES (contin) ¢ Placoid scales No air bladder Two chambered heart - single circulation Separate sexes Male pelvic fins bear claspers Internal fertilisation Many are viviparous L Examples : © Scoliodon (Dogfish) , Trygon (Stingray ~ has poisonous stings), Carcharodon (Great white shark), Pristis (Saw - fish) , Torpedo (Has electric organ) [— Class: Osteichthyes (Bony fish) Both marine and fresh water Bony endoskeleton Terminal mouth Cycloid or ctenoid scales Operculum present Single circulation External fertilisation Mostly oviparous LL Examples : © Fresh water - Prohu (Lalio rohita), Catla (Katla), Magur (Clarias), Tilapia ® Marine - Exocoetus (flying fish), Hippocampus ® Salmon can live in both fresh water and salt water - juvenile in fresh water adult in salt water © Aquarium - Betta (Fighting fish), Pterophyllum (angel fish) ee ~~ titel = SUPERCLASS TETRAPODA = [— Class: Amphibia Body divisible into head and trunk Skin moist without scales 3 chambered heart - incomplete double circulation Sexes separate - dioecious body External fertilisation Oviparous Example: © Frog (Rana tigrina) , Toad (Bufo) , Tree frog (Hyla), Salamander (Salamandra) , Ichthyophis - limbless amphibia *eeeeseeee#eese e@eeeee [— Class: Reptilia word from repere or reptum meaning to creep or crawl e Body covered with dry cornified scales ¢ © Mostly terrestrial P5 . Te ee -c Macropus (kangaroo) (Macropus rufus) Ornithorhynchus anatinus (aldkapast ~~. (Ornithorhynchus anatinus) Balaenoptera (whale) (Balaenoptera musculus) Pteropus (flying fox/bat) (Pteropus giganteus) Camelus (camel) (Camelus dromedarius) Elephas maximus (elephant) (Elephas maximus) Canis lupus familiaris (dog) (Canis lupus familiaris) +3 Ree =] e Felis catus (cat) (Felis catus) é Macaca mulatta (monkey) (Macaca mulatta) e Pteropus giganteus (flying fox) (Pteropus giganteus) rs ae Rattus norvegicus (rat) (Rattus norvegicus) é Equus ferus caballus (horse) (Equus ferus caballus) ao s,9, 0 22 9 ——— — eee fr ge 
