https://www.britannica.com/science/Eocene-Epoch the Early Eocene Eocene Epoch Eocene Epoch the middle Eocene Eocene Epoch Eocene Eocene Epoch https://www.britannica.com/science/Eocene-Epoch Eocene https://www.britannica.com/science/Eocene-Epoch "Eocene Epoch" the Early Eocene https://www.britannica.com/science/Eocene-Epoch https://www.britannica.com/science/Eocene-Epoch Éocène Eocene Eocene Epoch Britannica (онлайн)