Ensiklopedia Dunia

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

Pliohippus - Wikipedia

From Wikipedia, the free encyclopedia

Pliohippus Temporal range: Barstovian-Hemphillian ~15.97–4.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Pliohippus pernix skull
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Perissodactyla
Family:	Equidae
Subfamily:	Equinae
Tribe:	Equini
Genus:	†Pliohippus Marsh, 1874
Species
P. castilli P. fossulatus P. mirabilis P. nobilis P. pernix P. tantalus P. tehonensis

Pliohippus (Greek πλείων (pleion, "more") and ἵππος (ippos, "horse"))^[1] is an extinct genus of Equidae, the horse family. Pliohippus arose in the middle Miocene, around 15 million years ago. The long and slim limbs of Pliohippus reveal a quick-footed steppe animal. While some specimens have one toe per leg, others have three (the main toe and two non-functional side toes).^[2]

Until recently, because of its many anatomical similarities, Pliohippus was believed to be the ancestor of the present-day horse and its relatives in Equus. Although Pliohippus clearly is an equid and thus related to Equus, its skull had deep facial fossae, a feature not found in any member of Equus. Additionally, its teeth were strongly curved, unlike the very straight teeth of modern horses. Consequently, it is unlikely to be the ancestor of the modern horse; instead, it is likely to be the ancestor of Astrohippus.^[3] Pliohippus stood approximately 1.25 metres, similar to the modern horse. Also like the modern horse, Pliohippus was a grazer that fed on steppe grasses of the North American plains it inhabited.

Fossils of Pliohippus have been found at many late Miocene localities in Colorado, the Great Plains (Nebraska, including Ashfall Fossil Beds^[2] and the Dakotas) and also Canada. Pliohippus has been found beside Neohipparion.

Specimen at American Museum of Natural History
Life reconstruction of P. pernix

References

^ "Evolution". Equestrian and Horse. Retrieved 15 December 2016.
^ ^a ^b Williams, Wendy (2015). The Horse. Toronto, Canada: Harper Collins. p. 118. ISBN 9781443417860.
^ MacFadden, B. J. (1984). "Astrohippus and Dinohippus". J. Vert. Paleon. 4(2):273-283.

Perissodactyla

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla

Perissodactyla

Incertae sedis

†Anthracobunia

Radinskya
†Anthracobunidae	Anthracobune Hsanotherium Jozaria Obergfellia
†Cambaytheriidae	Cambaytherium Kalitherium Nakusia Perissobune

†Brontotheriidae

- See Brontotheriidae

Equoidea

Equidae

- See Equidae

†Palaeotheriidae

†Pachynolophinae	Anchilophus Bepitherium Eurohippus Hyracotherium Lijiangia Lophiohippus Lophiotherium Metanchilophus Orolophus Pachynolophus Paranchilophus Propalaeotherium Qianohippus
†Palaeotheriinae	Cantabrotherium Iberolophus Idiodontherium Leptolophus Mekodontherium Metaplagiolophus Palaeotherium Paraplagiolophus Plagiolophus Pseudopalaeotherium

†Hyopsodontidae?

†Phenacodontidae?

Tetraclaenodon
†Meniscotheriinae	Ectocion Meniscotherium
†Phenacodontinae	Almogaver Copecion Eodesmatodon Lophocion Phenacodus

Tapiromorpha

- See below↓

Tapiromorpha

Incertae sedis

†Cambaylophus
†Skopaiolophus

†Isectolophidae

Chowliia Gandheralophus Karagalax Meridiolophus Orientolophus Sastrilophus
†Homogalaxinae	Homogalax
†Isectolophinae	Isectolophus Schizolophodon

†Ancylopoda

- See Ancylopoda

Ceratomorpha

Tapiroidea

†Deperetellidae	Bahinolophus Deperetella Irenolophus Teleolophus
†Helaletidae	Colodon Dilophodon Helaletes Heptodon Heteraletes Paracolodon Plesiocolopirus Thuliadanta? Vastanolophus
Tapiridae	†Eotapirus †Miotapirus †Nexuotapirus †Paratapirus †Plesiotapirus †Protapirus †Tapiravus Tapirus

Rhinocerotoidea

- See below↓

Rhinocerotoidea

Rhinocerotoidea sensu lato

†Breviodon
†Fouchia
†Minchenoletes
†Siamolophus
†Triplopus
†Yimengia

†Indolophidae

Indolophus

Rhinocerotoidea
sensu stricto

†Selenaletes

†Hyrachyidae

Hyrachyus

Amynodon
†Cadurcodontini	Cadurcodon Lushiamynodon Sharamynodon Sianodon
†Metamynodontini	Gigantamynodon Megalamynodon Metamynodon Paramynodon Zaisanamynodon

†Paraceratheriidae

†Forstercooperiinae	Forstercooperia Gobicerops Pappaceras
†Paraceratheriinae	Aralotherium Dzungarotherium Juxia Paraceratherium Urtinotherium

Rhinocerotidae

- See below↓

Rhinocerotidae

†Aceratheriinae

†Elasmotheriinae

Gulfoceras Victoriaceros
†Diceratheriini	Diceratherium Penetrigonias Skinneroceras Subhyracodon Trigonias
†Elasmotheriini	Bugtirhinus Caementodon Elasmotherium Hispanotherium Iranotherium Kenyatherium Meninatherium Menoceras Ninxiatherium Ningxiatherium Ougandatherium Parelasmotherium Procoelodonta Sinotherium Tongxinotherium

Rhinocerotinae

†Teleoceratini

Rhinocerotina

Dicerorhinini	†Coelodonta Dicerorhinus †Dihoplus †Pliorhinus †Stephanorhinus
Dicerotini	Ceratotherium Diceros †Miodiceros †Paradiceros
Rhinocerotini	†Gaindatherium †Nesorhinus Rhinoceros †Rusingaceros

Extinct genera of Equidae (Horse family), arranged by subfamily

Kingdom Animalia
Phylum Chordata
Class Mammalia
Infraclass Eutheria
Superorder Laurasiatheria
Order Perissodactyla

Basal forms

Anchitheriinae

Equinae

Acritohippus Merychippus
Hipparionini	Cremohipparion Cormohipparion Eurygnathohippus Hipparion Hippotherium Nannippus Neohipparion Proboscidipparion Pseudhipparion Shanxihippus Sivalhippus
Equini	Haringtonhippus Heteropliohippus Parapliohippus Subtribe Protohippina: Calippus Protohippus Subtribe Equina: Astrohippus Dinohippus Equus Hippidion Pliohippus

Categories:

Hidden categories: