Researchers were working to determine the evolutionary history of modern horses using fossils of four horse ancestor species in North America. They had incomplete data for some of the fossils. This is the data available to the researchers. Species Fossil Location Percent Uranium 235 Decay Age of Rock Layer Mesohippus Colorado 3.2 Unknown Merychippus Montana 1.7 20–13 million years ago Dinohippus Montana Unknown 3–5 million years ago
Researchers were working to determine the evolutionary history of modern horses using fossils of four horse ancestor species in North America. They had incomplete data for some of the fossils. This is the data available to the researchers. Species Fossil Location Percent Uranium 235 Decay Age of Rock Layer Mesohippus Colorado 3.2 Unknown Merychippus Montana 1.7 20–13 million years ago Dinohippus Montana Unknown 3–5 million years ago
Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Christine Evers, Lisa Starr
Chapter13: Early Life Forms And The Viruses
Section: Chapter Questions
Problem 1CT
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Researchers were working to determine the evolutionary history of modern horses using fossils of four horse ancestor species in North America. They had incomplete data for some of the fossils.
This is the data available to the researchers.
Species |
Fossil Location |
Percent Uranium 235 Decay |
Age of Rock Layer |
Mesohippus |
Colorado |
3.2 |
Unknown |
Merychippus |
Montana |
1.7 |
20–13 million years ago |
Dinohippus |
Montana |
Unknown |
3–5 million years ago |
Orohippus |
Wyoming |
5.4 |
Unknown |
Based on the data presented, what is the order of the fossils from most distant to most recent ancestor?
Mesohippus, Dinohippus, Orohippus, Merychippus
Dinohippus, Merychippus, Mesohippus, Orohippus
Merychippus, Orohippus, Dinohippus, Mesohippus,
Orohippus, Mesohippus, Merychippus, Dinohippus
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