History of life on earth. hadean archaeanproterozoicpaleozoicmesozoiccenozoic Millions of years ago.

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Presentation transcript:

History of life on earth

hadean archaeanproterozoicpaleozoicmesozoiccenozoic Millions of years ago

Precambrian Archaean Proterozoic Phaenerozoic Paleozoic Cambrian Ordovician Silurian Devonian Carboniferous Permian Mesozoic Triassic Jurassic Cretaceous Cenozoic Tertiary Quaternary (Pleistocene - Recent)

Stromatolites -definitive fossil life 3.5BYA Precambrian - Archaean

Precambrian - Proterozoic Prokaryotes + Eukaryotes -trace fossils -Ediacaran fauna

Precambrian - Proterozoic Ediacaran fauna

Precambrian Archaean Proterozoic Phaenerozoic Paleozoic Cambrian Ordovician Silurian Devonian Carboniferous Permian Mesozoic Triassic Jurassic Cretaceous Cenozoic Tertiary Quaternary (Pleistocene - Recent)

Phaenerozoic - Paleozoic - Cambrian Cambrian explosion Why did such great fundamentally different body plans evolve in such great profusion in early evolutionary history but hardly at all thereafter? How and why did so many great changes evolve in such a short period of time? rapid diversification of higher taxa

Phaenerozoic - Paleozoic - Cambrian

Burgess shale

Phaenerozoic - Paleozoic - Cambrian Conodonts -earliest vertebrates -teeth of cellular bone

Phaenerozoic - Paleozoic - Ordovician -fauna differs remarkably from Cambrian -fish-like vertebrates appear -large nautiloids

Phaenerozoic - Paleozoic - Silurian Eurypterids - water scorpions

Phaenerozoic - Paleozoic - Silurian -first gnathostomes Acanthodians Placoderms Osteichthyes

Phaenerozoic - Paleozoic - Devonian -sarcopterygii, actinopterygii -ammonoids

Phaenerozoic - Paleozoic - Devonian -chelicerates -mandibulates

Precambrian Archaean Proterozoic Phaenerozoic Paleozoic Cambrian Ordovician Silurian Devonian Carboniferous Permian Mesozoic Triassic Jurassic Cretaceous Cenozoic Tertiary Quaternary (Pleistocene - Recent)

Phaenerozoic - Paleozoic - Devonian -ichthyostega

Phaenerozoic - Paleozoic - Carboniferous & Permian -sharks diversified

Phaenerozoic - Paleozoic - Carboniferous & Permian -winged insects

Phaenerozoic - Paleozoic - Carboniferous & Permian -amphibians diversified

Phaenerozoic - Paleozoic - Carboniferous & Permian reptiles mammals -amniotes gave rise to synapsids & diapsids

Precambrian Archaean Proterozoic Phaenerozoic Paleozoic Cambrian Ordovician Silurian Devonian Carboniferous Permian Mesozoic Triassic Jurassic Cretaceous Cenozoic Tertiary Quaternary (Pleistocene - Recent)

Phaenerozoic - Mesozoic - Triassic, Jurassic, Cretaceous coccolithophores

Phaenerozoic - Mesozoic - Triassic, Jurassic, Cretaceous -frogs, lizards, snakes, turtles

Phaenerozoic - Mesozoic - Triassic, Jurassic, Cretaceous archosaurs

Phaenerozoic - Mesozoic - Triassic, Jurassic, Cretaceous Archosaurs phytosaurs pterosaurs crocodilians dinosaurs

Phaenerozoic - Mesozoic - Triassic, Jurassic, Cretaceous Dinosaurs saurischians theropods sauropods

Phaenerozoic - Mesozoic - Triassic, Jurassic, Cretaceous Dinosaurs ornithischians hadrosaurs ceratopsians

Precambrian Archaean Proterozoic Phaenerozoic Paleozoic Cambrian Ordovician Silurian Devonian Carboniferous Permian Mesozoic Triassic Jurassic Cretaceous Cenozoic Tertiary Quaternary (Pleistocene - Recent)

Phaenerozoic - Cenozoic - Tertiary marsupials radiated colubrids radiated flightless birds appeared

Phaenerozoic - Cenozoic - Tertiary -bats & apes appear

Phaenerozoic - Cenozoic - Tertiary edentates

Phaenerozoic - Cenozoic - Tertiary artiodactyls

Phaenerozoic - Cenozoic - Tertiary perissodactyls

Phaenerozoic - Cenozoic - Tertiary teleosts diversified whales & sealions appeared

Precambrian Archaean Proterozoic Phaenerozoic Paleozoic Cambrian Ordovician Silurian Devonian Carboniferous Permian Mesozoic Triassic Jurassic Cretaceous Cenozoic Tertiary Quaternary (Pleistocene - Recent)

Phaenerozoic - Cenozoic - Pleistocene - present similar fauna to today

Phaenerozoic - Cenozoic - Pleistocene - present 4 major glaciations -more to come

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