Rhizosmilodon is an extinct genus of saber-tooth cat of the subfamily Machairodontinae that lived during the Early Pliocene and was discovered in the U.S. state of Florida.^[1] Comparable in size to a medium-sized modern jaguar at about 165 lb. in weight, fossils of Rhizosmilodon are known only from Florida. The best specimens for this species are its lower jaw and teeth, which carry intermediate characteristics between advanced forms such as Smilodon and primitive forms such as Paramachairodus. It was likely an ambush predator, preying on animals such as deer, tapirs and horses.^[2]

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Quick Facts Scientific classification, Type species ...

Rhizosmilodon Temporal range: Early Pliocene PreꞒ Ꞓ O S D C P T J K Pg N ↓
Fossil specimens
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Suborder:	Feliformia
Family:	Felidae
Subfamily:	†Machairodontinae
Tribe:	†Smilodontini
Genus:	†Rhizosmilodon Wallace & Hulbert, 2013
Type species
Rhizosmilodon fiteae Wallace & Hulbert, 2013

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Phylogenetic relationships of Rhizosmilodon with other Machairodonts based on analysis of 37 cranio-mandibular characters.^[1]