Tetramerorhinus

Tetramerorhinus; Temporal range: Early Miocene-Middle Miocene (Colhuehuapian-Laventan); ~
	Left lower jaw of Tetramerorhinus mixtum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Litopterna
Family:	†Proterotheriidae
Subfamily:	†Proterotheriinae
Genus:	†Tetramerorhinus; Ameghino 1894
Type species
	†Tetramerorhinus fortis; Ameghino, 1894
Species
	T. cingulatum Ameghino 1891; T. fleaglei Kramarz & Bond 2005; T. mixtum Ameghino 1894; T. lucarius Ameghino 1894; T. prosistens Ameghino 1899;
Synonyms
	Genus synonymy Tichodon Ameghino, 1894 ; T. cingulatum Proterotherium cingulatum; Ameghino, 1891 ; Tetramerorhinus fortis; Ameghino, 1891 ; Licaphrium cavum; Zittel, 1893 ; Proterotherium principale; Ameghino, 1894 ; Tichodon quadrilobus; Ameghino, 1894 ; T. lucarius Diadiaphorus santaecrucis; Lydekker, 1894 ; Licaphrium proclivum; Ameghino, 1894 ; Proterotherium brachygnathum; Ameghino, 1894 ; Proterotherium nitens; Ameghino, 1894 ; Proterotherium perpolitum; Ameghino, 1894 ; Proterotherium karaikense; Ameghino, 1904 ; Proterotherium politum; Ameghino, 1904 ; Proterotherium brachygnathus; Scott, 1910 ; T. prosistens Proterotherium prosistens; Ameghino, 1899 ; Diadiaphorus zamius; Ameghino, 1899 ; Heptaconus obcallatus; Ameghino, 1899 ; T. mixtum Proterotherium mixtum; Ameghino, 1894 ; Proterotherium pyramidatum; Ameghino, 1894 ; Proterotherium browni; Scott, 1910 ; Proterotherium dodgei; Scott, 1910 ;

Tetramerorhinus is an extinct genus of proterotheriid litoptern that lived during the Early and Middle Miocene in what is now Argentina and Peru.

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