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B. The Geologic Time Scale: A Look in Earth's Life History Directions: Analyze the data presented in the table. Then, answer the accompanying questions.

B. The Geologic Time Scale: A Look in Earth's Life History Directions: Analyze the data presented in the table. Then, answer the accompanying questions.

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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B. The Geologic Time Scale: A Look in Earth's Life History Directions: Analyze the data presented in the table. Then, answer the accompanying questions. Era Period End Date Life Forms (millions of years ago) Humans appear then become the dominant life form, large carnivores and mammoths live but become extinct later Cenozoic Quaternary 0.01 Many grazing animals Large running mammals Many modern types of modern mammals and birds Tertiary 2.5 Flowering plants and trees resemble modern kinds Earliest placental mammals Earliest flowering plants Dinosaurs die out together with many marine animals Mesozoic Cretaceous 65 Earliest birds and mammals Jurassic 135 “Age of Reptiles" Earliest dinosaurs Triassic 195 Abundant cycads and conifers Oun Extinction of trilobites and many marine animals Paleozoic Permian 245 Little change in terrestrial animals Earliest reptiles Abundant coal-forming forests Abundant sharks and amphibians Carboniferous 285 Earliest amphibians Extinction of armored fishes Devonian 345 Abundant fishes Earliest land plants and animals "Age of Fishes" begins First air-breathing animals Silurian 400 Earliest fishes Invertebrates are the dominant animals Ordovician 430 Abundant coelenterates and mollusks Echinoderms increase in numbers Trilobites dominant Earliest abundant record of marine life Cambrian 500 First life forms in the sea First bacteria (prokaryotes) appear Very rare fossils Precambrian 580 A LE
Transcribed Image Text:B. The Geologic Time Scale: A Look in Earth's Life History Directions: Analyze the data presented in the table. Then, answer the accompanying questions. Era Period End Date Life Forms (millions of years ago) Humans appear then become the dominant life form, large carnivores and mammoths live but become extinct later Cenozoic Quaternary 0.01 Many grazing animals Large running mammals Many modern types of modern mammals and birds Tertiary 2.5 Flowering plants and trees resemble modern kinds Earliest placental mammals Earliest flowering plants Dinosaurs die out together with many marine animals Mesozoic Cretaceous 65 Earliest birds and mammals Jurassic 135 “Age of Reptiles" Earliest dinosaurs Triassic 195 Abundant cycads and conifers Oun Extinction of trilobites and many marine animals Paleozoic Permian 245 Little change in terrestrial animals Earliest reptiles Abundant coal-forming forests Abundant sharks and amphibians Carboniferous 285 Earliest amphibians Extinction of armored fishes Devonian 345 Abundant fishes Earliest land plants and animals "Age of Fishes" begins First air-breathing animals Silurian 400 Earliest fishes Invertebrates are the dominant animals Ordovician 430 Abundant coelenterates and mollusks Echinoderms increase in numbers Trilobites dominant Earliest abundant record of marine life Cambrian 500 First life forms in the sea First bacteria (prokaryotes) appear Very rare fossils Precambrian 580 A LE
1. According to the table, what are the four large units of the geologic time? Arrange them based on the timeline below. Write your answers on the line provided. 2. In what era do we live in? When did it start? 3. Of the three periods of the Mesozoic era, which period lasted the longest? How long did it last? 4. What is the shortest era in Earth's geologic time? 5. Given the following groups of geologic time, which is properly sequenced in order of increasing lengths of time? Explain your answer. Devonian, Ordovician, Carboniferous OR Triassic, Devonian, Cambrian? EARLIEST LATEST
Transcribed Image Text:1. According to the table, what are the four large units of the geologic time? Arrange them based on the timeline below. Write your answers on the line provided. 2. In what era do we live in? When did it start? 3. Of the three periods of the Mesozoic era, which period lasted the longest? How long did it last? 4. What is the shortest era in Earth's geologic time? 5. Given the following groups of geologic time, which is properly sequenced in order of increasing lengths of time? Explain your answer. Devonian, Ordovician, Carboniferous OR Triassic, Devonian, Cambrian? EARLIEST LATEST
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