Classification Key

In: Other Topics

Submitted By ohhmyyluzzy94
Words 457
Pages 2
Classification Key:
Kingdom Animalia- eukaryote, mulitcellular, and hetero
Phylum Chordata- animal with dorsal hollow nerve cord; notochord- gill slits paired muscles
Subphylum Vertebrata- backbone chordates jawless fishes
Class Mammalia – with keratin hair, live birth, feed young milk from mammary glands.
1a) Not mammals go to 2
1b) mammals go to 9
2a) keratin scales C. Reptilia go to 3 Order Chelonia : sea turtle( with waterproof keratin scales & eggs)
2b) keratin feathers C. Aves got to 5 ( birds with keratin feather beaks and lay eggs)
3a) has shell go to 4
3b) no shell O. Squamata end ( reptile: sea snakes & Marine iguanas)
4a) shell O. Crocodilia end –( salt water crocodile)
5a) Can not fly O. Sphenisiciformes end (penguins have stubby flippers that allow them to fly underwater)
5b) can fly got to 6
6a) duck beak 0. Anseriformes end (duck)
6b) not a duck go to 7
7a) Pouch beak 0. Pelicaniformes end ( have a unique pouch below their beaks)
7b) not pouch go to 8
8a) funnel beak o. Porcellariformes end ( tube like nostrils and heavy beaks curved at the tip- Tubenoses)
8b) not a funnel end O. Charadriiformes end ( great black backed and bottom white long bill- EX. Gull related birds.)
9a) 4 appendages go to 10
9b) 2 appendages go to 14
10a) No flippers 0. Carnivora go to 11 (sea otters,weasels….skunks- molars slice like scissors)
10b) flippers go to 12 0. Pinnipedia (have flippers)
11a) bears F. Ursidae end
11b) otter F. Musteiidae end
12a) no external ears go to 13 (elephant seals)
12b) has external ears F. Otaridae end ( sea lions, eared seals, fur seals, external ears and long necks and can walk on hind flippers.)
13a) can’t walk on hind flippers F. Phocidae end (earless seals, no external ear)
13b) can walk on hind flippers F. Odobenidae end ( Pinnipedia- walk on hind legs, but don’t have external ears)
14a) fluke tail…...

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