Assertion: burro's horse | /r/CapableOf | replace stenoid horses
Facets:
value: because of climatic preferences
type: CAUSE
value: between 500,000 years ago
type: TEMPORAL
value: because of changes in ecological niches
type: CAUSE
value: between one million
type: OTHER
Source sentences:
text: 3 Initially rare in North America, caballoid horses were associated with stenoid horses (perhaps ancestral forerunners but certainly distinct species), but between one million and 500,000 years ago, the caballoid horses replaced the stenoid horses because of climatic preferences and changes in ecological niches (Forstén 1988).