The pattern that emerged in horse evolution as scientists studied early horse fossils and modern horse bones is known as "Hypsodonty." Hypsodonty refers to the gradual increase in the size and complexity of horse teeth over time. Early horse fossils from the Eocene period (around 50 million years ago) show evidence of low-crowned teeth, more suited for browsing on soft vegetation. However, as horse species evolved and adapted to different environments, their teeth became taller and more durable, with increased enamel and dentin, indicating a shift towards grazing on tougher, abrasive grasses. Modern horses display highly hypsodont teeth, which enable them to efficiently grind and digest grasses. This dental adaptation is a significant pattern observed in horse evolution.
