Phenacodontidae
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Phenacodontidae is an extinct family of large herbivorous mammals traditionally placed in the "wastebasket taxon" Condylarthra, which may instead represent early-stage perissodactyls. They lived from
Phenacodus
Cranium of Ectocion ralstonensis
Heptodon posticus
Megatapirus DB
Ungulate
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Ungulates are members of the diverse clade Euungulata, which primarily consists of large mammals with hooves. Once part of the taxon "Ungulata" along with paenungulates and tubulidentates, as well as
Phenacodontidae
…According to more recent views, instead of a monophyletic clade, the condylarths are better understood as an evolutionary grade that lead to the true ungulates. Phylogenetic analysis of 2012 recover phenacodontids as a series of sister taxa to the Altungulata clade. Later phylogenetic studies confirm that…
Clade Ungulata Two Orders
Plains zebra
Black rhinoceros
Père David's deer