The Last 1 Billion Years B.P.	0,000,000,000s BP

900 Millions: Precambrians Algae	800,000,000s  - Precambrian Algae
700,000,000s - Precambrian Algae	600,000,000s -Precambrians Map Algae
500,000,000s  Paleozoic Era Map Cambrian Period Sponge, Worm, Trilobite Many animals developed hard skeletons Ordovician Period Age of Invertebrates Graptolite, Cystoid	400,000,000s Paleozoic Era Map Ordovician Period Spread of shalow seas over land. Marine invertebrates diversify rapidly. Plants Fungi Invertebrates Graptolite, Cystoid Map Silurian Period Rise of land plants. Prolific life in shallow seas. Plants Primitive Herbs, Trees Invertebrates Jellyfish, Coral, Nautiloid,  Eurypterid Fish Ostracoderm Age of Fishes Devonian Period Widespread invasion of fresh water by animals and plants. Rise of ammonoids in sea.   Plants Primitive Herbs, Trees Invertebrates Brachiopod, Starfish, Clam, Fish Placoderm
300,000,000s Paleozoic Era Devonian Period Map Fishes divesify. Plants Primitive Herbs, Trees Invertebrates Brachiopod, Starfish, Clam, Fish Placoderm Map Carboniferous Period Map Age of Amphibians Mississippian Period Plants Scale Tree Invertebrates Blastoid, Sea Lily, Scorpion Fish Shark, Lobe-finned Fish, Amphibians Labyrinthodont Pennsylanian Period Plants Cordaite, Fern Invertebrates Fusilinid, Snail, Insect Fish Lamprey Reptiles Cotylosaur	200,000,000s Paleozoic Era / Mesozoic Era Carboniferous Period Map (Pennsylanian) Plants Fungi Invertebrates Graptolite, Cystoid Permian Period Map Widespread extinction of marine animals. Mammal-like reptiles diversify. Plants Primitive Herbs, Trees Invertebrates Jellyfish, Coral, Nautiloid,  Eurypterid Fish Ostracoderm Amphibians Caecilian Reptiles Pelycosaur Mesozoic Era Age of Reptiles Triassic Period Map Reptiles diversify rapidly. First mammals appear Plants Conifer Invertebrates Belemnite, Shrimp Fish Bony Fish Reptiles Ichthyosaur, Crocodile, Thecodont, Therapsid
100,000,000s Mesozoic Era Triassic Period Reptiles diversify rapidly. First mammals appear Plants Conifer Invertebrates Belemnite, Shrimp Fish Bony Fish Reptiles Ichthyosaur, Crocodile, Thecodont, Therapsid Map Jurassic Period Map Peak of dinosaur diversity. Rise of birds. Plants Cycad Invertebrates Jellyfish, Coral, Nautiloid,  Eurypterid Fish Ray Amphibians Frog Reptiles Plesiosaur, Lizard, Trachodon, Stegosaur, Brontosaurus, Pterosaur Birds Archaeopteryx Mammals Pantotheres Cretaceous Period Plants Cycad Invertebrates Crab Amphibians Salamander Reptiles Turtle, Snake, Triceratops, Tyrannosaurus Birds Toothed bird Mammals Primitve Placental Mammals Multituberculate	000,000,000s  Mesozoic Era / Cenozoic Era Cretaceous Period Many animals become extinct, including dinosaurs & ammonites. Rise of flowering plants. Plants Cycad Invertebrates Crab Amphibians Salamander Reptiles Turtle, Snake, Triceratops, Tyrannosaurus Birds Toothed bird Mammals Primitve Placental Mammals Multituberculate Cenozoic Era Age of Mammals Tertiary Period   Plants Angiosperm Invertebrates Octopus Birds Toothless Bird Mammals Creodont, Mastodon, Eohippus, Miohippus Eocene Epoch Paleocene Epoch Early mammals diversify. Apperance of many modern mammal groups. Oligocene Epoch Many early mammals become extinct. Miocene Epoch Rise & Spread of grasslands, associated with spread of grazing mammals. Pliocene Epoch Climate becomes colder. Many mammals become extinct. Appearance of man. Quartenary Period   Mammals Modern Mammals, Humans Plants Modern Plants Pleistocene Epoch Ice covers much of Europe & N. America. Holocene Interglacial Ice retreats to present position.

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Sources: AN INSTANT GUIDE TO PREHISTORIC LIFE, Pamela Forey 1988 Bonanza Books
Hammond Physical World Atlas 1988