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Haplohippus

From Wikipedia, the free encyclopedia
Extinct genus of mammals

Haplohippus
Temporal range:42.–38.0 MaDuchesnean[1]
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Perissodactyla
Family:Equidae
Genus:Haplohippus
McGrew 1953
Species[1]
  • Haplohippus texanus
Restoration ofHaplohippus (middle right) and other animals of the Hancock Mammal Quarry

Haplohippus is an extinct genus of the modernhorse familyEquidae, that lived in theEocene, from 42 to 38 million years ago. Fossil remains ofHaplohippus have been found in theClarno Formation, part of theJohn Day Fossil Beds National Monument of the Northwestern United States.[2] WhileHaplohippus is quite similar toOrohippus, it is considered more primitive in character thanEpihippus.[3]

References

[edit]
  1. ^ab"Haplohippus".fossilworks.org.Archived from the original on 2012-10-12. Retrieved2009-01-19.
  2. ^Kenworthy, J.P.; Santucci, V. L.; McNerney, M.; Snell, K. (2005).Paleontological Resource Inventory and Monitoring, Upper Columbia Basin Network (PDF). National Park Service. TIC #D259.
  3. ^MacFadden, Bruce J. 1976 "Cladistic Analysis of Primitive Equids, with Notes on Other Perissodactyls"Systematic Zoology25(1):1-14
Incertae sedis
Anthracobunia
Anthracobunidae
Cambaytheriidae
Brontotheriidae
Equoidea
Equidae
Palaeotheriidae
Pachynolophinae
Palaeotheriinae
Hyopsodontidae?
Phenacodontidae?
Meniscotheriinae
Phenacodontinae
Tapiromorpha
    • See below↓
Palaeotherium medium

Hyopsodus sp.

Meniscotherium chamense
Incertae sedis
Isectolophidae
Homogalaxinae
Isectolophinae
Ancylopoda
Ceratomorpha
Tapiroidea
Deperetellidae
Helaletidae
Tapiridae
Rhinocerotoidea
    • See below↓
Heptodon posticusTapirus augustus
Rhinocerotoideasensu lato
Indolophidae
Rhinocerotoidea
sensu stricto
Hyrachyidae
Eggysodontidae
Hyracodontidae
Amynodontidae
Amynodontinae
Cadurcodontini
Metamynodontini
Paraceratheriidae
Forstercooperiinae
Paraceratheriinae
Rhinocerotidae
    • See below↓
Hyracodon nebraskensisParaceratherium transouralicum
Aceratheriinae
Elasmotheriinae
Diceratheriini
Elasmotheriini
Rhinocerotinae
Teleoceratini
Rhinocerotina
Dicerorhinini
Dicerotini
Rhinocerotini
Coelodonta antiquatisElasmotherium caucasicum
Extinct genera ofEquidae(Horse family), arranged by subfamily
Basal forms
Anchitheriinae
Equinae
Hipparionini
Equini
Haplohippus


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