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Using figure 13.23, calculate the percentage. Fishes have been present (since the beginning of the Ordovician Period) what percent?

Using figure 13.23, calculate the percentage. Fishes have been present (since the beginning of the Ordovician Period) what percent?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Using figure 13.23, calculate the percentage. Fishes have been present (since the beginning of the Ordovician Period) what percent?
Physical Geography: A Landscape Appreciation Eon Phanerozoic Proterozoic Archean Hadean 542 Ma 2500 Ma 4000 Ma 4600 Ma Eon Cra Phanerozoic Paleozoic Cenozoic GEOLOGIC Period Mesozoic Quaternary Neogene Paleogene Carboniferous TIME SCALE Tertiary Holocene Pleistocene Pliocene Oligocene Eocene Paleocene Cretaceous Jurassic Triassic Miocene Permian Epoch Age (Ma) 0.01 Pennsylvanian (subperiod) Silurian Mississippian (subperiod) Devonian Ordovician Cambrian Precambrian 2.6 5.3 23.0 33.9 55.8 65.5 145.5 199.6 251.0 299.0 359.2 416.0 443.7 488.3 542.0 The geologic time scale. The divisions of Earth's history were originally based he sequence of major changes and extinctions seen in the fossil record. hown as millions of years ago (Ma) were established more recently but are s are some of the time divisions themselves: in 2009 the Neogene Period was the Miocene and Pliocene but no later epochs, although the older designation is still in use: the designation of the Hadean The present Humans develop "Age of Mammals" Extinction of dinosaurs and many other species First flowering plants First birds and mammals First dinosaurs Extinction of trilobites and many other marine animals First reptiles Amphibians abundant First insect fossils Fishes dominant First land plants First fishes Trilobites dominant First organisms with shells 11
Transcribed Image Text:Physical Geography: A Landscape Appreciation Eon Phanerozoic Proterozoic Archean Hadean 542 Ma 2500 Ma 4000 Ma 4600 Ma Eon Cra Phanerozoic Paleozoic Cenozoic GEOLOGIC Period Mesozoic Quaternary Neogene Paleogene Carboniferous TIME SCALE Tertiary Holocene Pleistocene Pliocene Oligocene Eocene Paleocene Cretaceous Jurassic Triassic Miocene Permian Epoch Age (Ma) 0.01 Pennsylvanian (subperiod) Silurian Mississippian (subperiod) Devonian Ordovician Cambrian Precambrian 2.6 5.3 23.0 33.9 55.8 65.5 145.5 199.6 251.0 299.0 359.2 416.0 443.7 488.3 542.0 The geologic time scale. The divisions of Earth's history were originally based he sequence of major changes and extinctions seen in the fossil record. hown as millions of years ago (Ma) were established more recently but are s are some of the time divisions themselves: in 2009 the Neogene Period was the Miocene and Pliocene but no later epochs, although the older designation is still in use: the designation of the Hadean The present Humans develop "Age of Mammals" Extinction of dinosaurs and many other species First flowering plants First birds and mammals First dinosaurs Extinction of trilobites and many other marine animals First reptiles Amphibians abundant First insect fossils Fishes dominant First land plants First fishes Trilobites dominant First organisms with shells 11
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