†family Notohippidae Ameghino 1894 (eutherian)
PaleoDB taxon number: 43379
Synonyms: Rhynchippidae Loomis 1914 (no. 57064), Rhynchippinae Simpson 1945 (no. 57065)
Parent taxon: Toxodontia according to V. Deraco and D. A. GarcÍa-López 2016
Sister taxa: Atryptheridae, Haplodontheriidae, Homalodotheriidae, Isotemnidae, Leontiniidae, Lithops praevius, Nesotherium, Noaditherium, Pachyrucidae, Periphragnis, Protoxodontidae, Rhadinotherium limitatum, Tembotheridae, Toxodontidae, Xotodontidae
Subtaxa: Argyrohippus, Coresodon, Eomorphippus, Eurygeniops normalis, Eurygenium, Interhippus, Mendozahippus, Moqueguahippus, Morphippus, Nesohippus, Notohippus, Pampahippus, Pascualihippus, Patagonhippus, Perhippidion, Pseudhippus, Rhynchippus, Rosendo, Stilhippus
Ecology: scansorial insectivore