Concise hierarchy
(Kingdom) Animalia - (Phylum) Chordata - (Class) Mammalia - (Order) Rodentia - (Family) Echimyidae
Original position
Subsequent entries
| †Haplostropha (Genus) Ameghino, 1891 | |
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| †Isomyopotamus (Genus) Rovereto, 1914 | |
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| †Matyoscor (Genus) Ameghino, 1902 | |
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| Myocastor (Genus) Kerr, 1792 | |
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| †Paramyocastor (Genus) Ameghino, 1904 | |
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| †Proatherura (Genus) Ameghino, 1906 | |
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| †Prospaniomys (Genus) Ameghino, 1902 | |
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| †Spaniomys (Genus) Ameghino, 1877 | |
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| †Strophostephanos (Genus) Ameghino, 1891 | |
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| †Tribodon (Genus) Ameghino, 1887 | |
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Current position
Alternative positions
Historical positions
Number of Subtaxa