Jump to: navigation, search


Fossil range: Early Eocene
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Genus: Sifrhippus
Froehlich, 2002
Binomial name
Sifrhippus sandrae
(Gingerich, 1989)

Sifrhippus ("zero horse") is an extinct genus of horse. Sifrhippus is the oldest horse known from North America, and its fossils come from the earliest Eocene of the Bighorn Basin, Wyoming.[1][2] Sifrhippus was a very small horse the size of a house cat.[1]


  1. 1.0 1.1 Gingerich, P.D. (1989). "New earliest Wasatchian mammalian fauna from the Eocene of northwestern Wyoming: composition and diversity in a rarely sampled high-floodplain assemblage". University of Michigan Papers on Paleontology 28: 1–97. http://hdl.handle.net/2027.42/48628. 
  2. Froehlich, D.J. (2002). "Quo vadis eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla)". Zoological Journal of the Linnean Society 134 (2): 141–256. doi:10.1046/j.1096-3642.2002.00005.x. 


Premier Equine Classifieds


Subscribe to our newsletter and keep abreast of the latest news, articles and information delivered directly to your inbox.

Did You Know?

Modern horse breeds developed in response to a need for "form to function", the necessity to develop certain physical characteristics in order to perform a certain type of work... More...

The Gypsy Cob was originally bred to be a wagon horse and pulled wagons or caravans known as Vardos; a type of covered wagon that people lived in... More...

Archaeological evidence indicates that the Arabian horse bloodline dates back 4,500 years. Throughout history, Arabian horses spread around the world by both war and trade.... More...

That the term "Sporthorse" is a term used to describe a type of horse rather than any particular breed... More...