During which geological time frame were fossils of Epicyon haydeni found?
Answer
Early Miocene until the Early Pliocene
The fossil evidence for *Epicyon haydeni* spans a considerable duration in North American prehistory, demonstrating its long-term success as a predator adapted to changing Miocene environments. The timeframe during which fossils are found stretches from the Early Miocene epoch up to the Early Pliocene epoch. This temporal range corresponds approximately to the period between 12 million years ago and 5 million years ago. This longevity indicates that *E. haydeni* was a highly successful, though specialized, apex predator dominating its environment for millions of years before the pressures of competition and environmental shifts led to its decline.

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