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Archaeohippus information


Archaeohippus
Temporal range: 30.8–13.6 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
 Early Oligocene to middle Miocene[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Subfamily: †Anchitheriinae
Genus: †Archaeohippus
Gidley, 1906
Species[2]
  • A. blackbergi (Hay, 1924)
  • A. mannulus O'Sullivan, 2003
  • A. mourningi (Merriam, 1913)
  • A. penultimus Matthew, 1924
  • "A." stenolophus (Lambe, 1905)
  • A. ultimus (Cope, 1886) (type)

Archaeohippus (Greek: "ancient" (archaios), "horse" (hippos)[3]) is an extinct three toed member of the family Equidae known from fossils of early Oligocene to middle Miocene age.[1] The genus is noted for several distinct skeletal features. The skull possesses deeply pocketed fossa in a notably long preorbital region.[1] The genus is considered an example of phyletic dwarfism with adults estimated at being on average 20 kilograms in weight. This is in contrast to the most common equid of the period, Miohippus.[1] Characters of the teeth show a mix of both primitive and advanced traits. The advanced traits are very similar to those shown in the genus Parahippus. The noted similarities of Archaeohippus and Parahippus show them to be descended from a common ancestor. They are considered sister species.[1]

  1. ^ a b c d e O'Sullivan, Jay A. 2003 "A new species of Archaeohippus (Mammalia, Equidae) from the Arikareenan of Central Florida" Journal of Vertebrate Paleontology 23(4):877–885
  2. ^ "Fossilworks: Archaeohippus".
  3. ^ "Glossary. American Museum of Natural History". Archived from the original on 20 November 2021.

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