Hyracotherium
genus Hyracotherium
tarpan
anchithere
equine
wild horse
genus Mesohippus
snake-grass
Przewalski's horse
equisetoid
eohippus
dawn horse
Equus caballus przevalskii
hippidiform
genus Equus
Equus
Equus caballus przewalskii
Przevalski's horse
pewterwort
Irish hobby
Monday morning disease
dwarf horsetail
meadow horsetail
shade horsetail
equisetum
equisetid
marsh horsetail
arthrophyte
equisetaceous
Equisetum
genus Protohippus
pantodontan
eocardiid
genus Australopithecus
genus Equisetum
Australopithecus
Clydesdale
Equus caballus gomelini
equid
mesohippus
hobby
aurochs
variegated horsetail
leptictid
Bos primigenius
urus
shuotheriid
common horsetail
field horsetail
hyolith