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Kingdom Animalia (animals)
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Eumetazoa (metazoans)-
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 Metatheria (marsupial mammals)-
Order Didelphimorphia (American marsupials)
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Family Didelphidae (American opossums and opossums)
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Subfamily Didelphinae (American opossums)
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Genus Chironectes (water opossum and yapok)
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Genus Didelphis (common opossums)
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Genus Gracilinanus (gracile mouse opossums)
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Genus Hyladelphys (mouse opossum) -
Genus Lestodelphys (Patagonian opossum)
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Genus Lutreolina (lutrine opossum)
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Genus Marmosa (common mouse opossums)
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Genus Marmosops (slender mouse opossums)
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Genus Metachirus (brown four-eyed opossum)
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Genus Micoureus (woolly mouse opossums)
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Genus Monodelphis (short-tailed opossums)
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Genus Philander (four-eyed opossums)
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Genus Thylamys (fat-tailed mouse opossums)
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Genus Tlacuatzin (gray mouse opossum)
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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.
