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Science
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Physics
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Chemistry
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Organic Chemistry
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Biology
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Eukaryology
Order
Perissodactyla
Extant Perissodactyls
Hippomorpha
Ceratamorpha
Overview of Eocene Equids
Immediate Phylogeny
Parent Group
Euungulata
Sister Groups
Cetartiodactyla
Daughter Groups
Ceratamorpha
Hippomorpha
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