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Kingdom Animalia (animals)
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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Deuterostomia (deuterostomes)
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Phylum Chordata (chordates)
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Craniata (craniates)
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Subphylum Vertebrata (vertebrates)
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Superclass Gnathostomata (jawed vertebrates)
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Euteleostomi (bony vertebrates)
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Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates)
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Tetrapoda (tetrapods)
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Amniota (amniotes)
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Synapsida (synapsids)
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Class Mammalia (mammals)
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Subclass Theria (Therian mammals)
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Infraclass Eutheria (placental mammals)
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Order Rodentia (rodents)
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Suborder Hystricomorpha (hystricognath rodents)
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Infraorder Hystricognathi (hystricognath rodents)
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Family Abrocomidae (chinchilla rats)
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Family Agoutidae (pacas) -
Family Bathyergidae (blesmoles and mole rats)
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Family Capromyidae (West Indian hutias)
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Family Caviidae (cavies)
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Family Chinchillidae (chinchillas and viscachas)
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Family Ctenomyidae (tuco-tucos)
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Family Cuniculidae (pacas)
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Family Dasyproctidae (acuchis and agoutis)
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Family Dinomyidae (pacarana)
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Family Echimyidae (spiny rats)
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Family Erethizontidae (New World porcupines)
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Family Heptaxodontidae (giant hutias)
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Family Hydrochaeridae (capybara) -
Family Hystricidae (Old World porcupines)
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Family Myocastoridae (coypus and nutria)
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Family Octodontidae (degus, rock rats, and viscacha rats)
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Family Petromuridae (dassie rat)
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Family Thryonomyidae (cane rats)
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Confused by a class within a class or an order within an order? Please see our brief essay.
Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World, Princeton University Press, copyright 2003. Used by permission.



