SynapsidaEquidae

Eohippus angustidens

Dawn horse

Eohippus angustidens skeletal reconstruction, left lateral view, length 60 cm.
Scale bar = 10 centimeters
Taxon
Eohippus angustidens Cope, 1875
Reconstructed length
60 cm (2 feet)
View
Left lateral
Drawing
© Scott Hartman
Drawn
2017, revised 2026
Clade
  1. Synapsida
  2. Therapsida
  3. Mammalia
  4. Placentalia
  5. Laurasiatheria
  6. Perissodactyla
  7. Equidae

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Eohippus lived during the Early Eocene of North America. One of the earliest horse-relatives, it was about the size of a small dog. Eohippus most likely browsed on soft foliage, and despite its status as an early horse relative it still bore four toes.

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