Classes of Vertebrates

Name each class of Phylum Chordata based on the description

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Last updated: April 8, 2017

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Description	Class
Slime producing marine fish, have a skull but no vertebral column	Myxini
Armored, jawless fishes, thought to be extinct	Cephalospidomorphi
Cartilaginous fishes, have jaws, paired fins, scales and no bone	Chondrichthyes
Bony fishes, cold blooded, use gills for breathing and fins for swimming	Osteichthyes

Description	Class
Live in water and on land, have 4 limbs that evolved from fins	Amphibia
Cold blooded, have 4 limbs, lay eggs	Reptilia
Technically a subgroup of reptiles, have feathers, toothless beaked jaws and lay eggs	Aves
Distinguished by possesion of hair, 3 middle ear bones and mammary glands	Mammalia