After McKenna & Bell, 1997
<==o †Notoungulata Roth, 1904 |?- †Acoelodus |?- †Pleurystylops |?- †Lophiodonticulus |?- †Tonostylops |?- †Isotypotherium |?- †Epitypotherium |?- †Carolodarwinia |?- †Ortholophodon |?- †Procolpodon |?- †Senodon |?- †Loxocoelus |?- †Pyralophodon |?- †Orthogeniops [Orthogenium] |?- ?†Pyramidon [nomen dubium?] |?- ?†Archaeotypotherium [nomen dubium?] |-- †Notioprongonia |-- †Toxodontia `-- †Typotheria Zittel, 1893
Reference(s):
- Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Carroll, R. L., 1988: Appendix. 594-648.
in Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631