Cramaucheniinae

Cramaucheniinae is a paraphyletic^[1] or monophyletic^[2] subfamily of macraucheniids that originated in the middle Eocene (Mustersan SALMA). The size range of the group ranged from small, basal forms to larger and more derived forms. During their evolution, the cramaucheniines undergone a trend from evolving from small basal forms such as Polymorphis into larger, more derived taxa such as Theosodon.^[3][1]

Cramaucheniinae Temporal range: Middle Eocene-Middle Miocene (Mustersan-Mayoan) ~48–11.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skull of Cramauchenia
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Litopterna
Superfamily:	†Macrauchenioidea
Family:	†Macraucheniidae
Subfamily:	†Cramaucheniinae Ameghino, 1902
Genera
†Caliphrium †Coniopternium †Cramauchenia †Llullataruca †Phoenixauchenia †Polymorphis? †Pternoconius †Theosodon