Kobayashi and Hamada (1964) described a small fauna from the Satun Shale (?=Thung Wa Shale of Bunopas, 1983); the trilobite therein, Basiliella satunensis, belongs to a genus which is widely distributed in the mid-Ordovician and not palaeogeographically critical. Here we fig- ure for the first time a small fauna from strati- graphically below the Pa Kae Formation, as de- scribed by Wongwanich et al. (1990, Figs.2, 3), collected from an isolated outcrop lying on the roadside 3 km to the east of the type section of the Pa Kae Formation.