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Noun: protohippus  `prowtow'hipus
  1. Pliocene horse approaching donkeys in size

Type of: Equus caballus, horse

Part of: genus Protohippus

Encyclopedia: Protohippus

Nearest

protoceratops
protocol
protoctist
protoctist family
protoctist genus
protoctist order
Protoctista
protogeometric
protoheme
protohemin
protohippus
protohistory
Proto-Indo European
protology
protomammal
protomartyr
proton
proton accelerator
proton magnetic resonance
Proto-Norse
protonotary