During what period(s) did tyrannosaurus exist on Earth? ____  period(s)     Amphibians existed on Earth from _____  to  ____  period.     How old would a rock that contains shark and archimedes be? _____ to _____MA     How old would a rock that contains ceratities, fenestella, and amphibian be? _____ to _____MA     How old would a rock that contains olenellus be?  _____ to _____MA

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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Some fossil animals (fauna) and plants (flora) have existed on earth for large spans of time, while others known as index fossils were found all over the planet but only existed for a brief period of time. Both can be an important tool for dating rocks. If we identify the fossils in a rock and determine what periods in Earth’s history these were all present at the same time, we can use their overlap to approximate the age of the rocks.

Instructions: You will be determining the approximate age of rocks by using fossil record below. The figure on the right gives the age ranges of some fossils; use these to answer the following questions:

    During what period(s) did tyrannosaurus exist on Earth? ____  period(s)
    Amphibians existed on Earth from _____  to  ____  period.
    How old would a rock that contains shark and archimedes be? _____ to _____MA

    How old would a rock that contains ceratities, fenestella, and amphibian be? _____ to _____MA

    How old would a rock that contains olenellus be?  _____ to _____MA

Age Years (Ma)
1.8
65.5
145
200
251
299
318
359
416
444
488
542
Period
Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Pennsylvanian
Mississippian
Devonian
Silurian
Ordovician
Cambrian
Age Ranges of Fossils
Transcribed Image Text:Age Years (Ma) 1.8 65.5 145 200 251 299 318 359 416 444 488 542 Period Quaternary Tertiary Cretaceous Jurassic Triassic Permian Pennsylvanian Mississippian Devonian Silurian Ordovician Cambrian Age Ranges of Fossils
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