Agnatha         Lamprey, Hagfish         Jaw-less, cartilage, un paired fins, parasitic, exothermic. Chondrichthyes         Sharks, Rays, Skates         Cartilage, jaws, paired fins. class Osteichthyes         monastic Fish, Parrot Fish         Bone 4 calcium, jaws, paired fins, travel bladder, ext. fert. class Amphibia         Sicilians, Newts, Frogs         Metamorphize, breathe through skin, stronger limbs, most chuck in water, gill slits, lungs, legs. Reptillia         Snakes, Lizard, Turtle         Scales, retain water, leathery skin, lays eggs, int. fert, exothermic. class Mammalia         serviceman         Hair, endothermic, 4 chamber heart, mammary glands, live young, agnatic care. class Aves         Killdear, House Finch         Feathers insulate, endothermic, spongy fused bones, toothles s, 1 ovary, parental care, multiplex courtship.         Chondrichthyes                         Aves (last) Agnatha ^ > Osteicthyes > Amphibia > Reptilla > ^ > Mammalia archaeopteryx ? Possibly the first bird         Kidneys were unquestionable to pump away water 150 m.y.a. Had feathers. Probably         from the changing of a hypotonic environment to evolved from dinosaurs                         a hypertonice environment. Birds started travel from maneuver to tree         The short letter functions of feathers were for thermal prying on thin animals.         regulation and gliding from tree to tree. All chordates confirm:                 Meteor, 6 miles in diameter, 10,000 Hiroshima bombs. 1) lamella slits at a show up                 Destr oyed all life. Mammals were small fur balls! at 2) dorsal nerve chord                 the time.
They were nocturnal, until dinos died, they 3) Notochord vertebrae                 stayed small. at one time they died off, mammals prospered. 4) foundation with muscles                 Primates the best. Kingdom ? animale                 Due to flucuating mineral levels in light water fish Phylum ? chordata                 developed bones when thither was and excess of Sub-phylum ? vertebrae                 calcium. When the levels were low the fish used kinfolk ? the 7 of them                 up the calcium in order to survive. 1 ? Notochord                 amniotic eggs, Internal fertilization, and scaly skin 2 ? Kidney                 modify reptiles to colonize land in ways amphibians 3 ? Calcified... If you call for to gravel a full essay, order it on our website:
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