From: Ben Creisler bcreisler@gmail.com Unfortunately, the fossil log in this photo is said to come from the Late Jurassic in Yixian, not the Early Cretaceous. However, it does give a diameter of 1.5 to 1.9 meters. Clearly big trees existed earlier. http://art.people.com.cn/GB/41067/41121/7142516.html