Note: Some of the Jehol Biota may also occur in the Korean Peninsula and further West towards Mongolia, but the best documented locations are all in NE China
The #JeholBiota as defined by Pan et al (2013) spans ~10 million years of the Early Cretaceous (~130-120mya). Comprising of the #Yixian, #Jiufotang, and #Huajiying formations, the Jehol Biota is often spectacularly preserved on account of shallow water & volcanic ash preservation...