Haplohippus
Encyclopedia
Haplohippus is an extinct genus of the modern horse
family Equidae
, that lived in the Eocene
, from 42 to 38 million years ago. Fossil remains of Haplohippus have been found in the Clarno Formation, part of the John Day Fossil Beds National Monument. While Haplohippus is quite similar to Orohippus
, it is considered more primitive in character than Epihippus
.
Horse
The horse is one of two extant subspecies of Equus ferus, or the wild horse. It is a single-hooved mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today...
family Equidae
Equidae
Equidae is the taxonomic family of horses and related animals, including the extant horses, donkeys, and zebras, and many other species known only from fossils. All extant species are in the genus Equus...
, that lived in the Eocene
Eocene
The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...
, from 42 to 38 million years ago. Fossil remains of Haplohippus have been found in the Clarno Formation, part of the John Day Fossil Beds National Monument. While Haplohippus is quite similar to Orohippus
Orohippus
Orohippus is an extinct ancestor of the modern horse that lived in the Eocene .thumb|left|Restoration...
, it is considered more primitive in character than Epihippus
Epihippus
Epihippus is an extinct genus of the modern horse family Equidae, that lived in the Eocene, from 46 to 38 million years ago.Epihippus is believed to have evolved from Orohippus , which continued the evolutionary trend of increasingly efficient grinding teeth. Epihippus had five grinding,...
.