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†Ptilodontidae Cope, 1887 †Cheirogidae Cope, 1887 †Ectypodidae Sloan & Van Valen, 1965 †Ectypodontidae Sloan & Van Valen, 1965 †Neoplagiaulacidae Ameghino, 1890 sensu McKenna & Bell, 1997 †Ptilodontinae Cope, 1887 sensu McKenna & Bell, 1997
McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631
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