I just acquired these trilos from China, just wanted to make sure the names/locations are correct as I have seen it vary between sellers...
Ductina vietnamica - Devonian: Famennian (according to Sepkoski) - Mountains of W. Guangxi, China
-also curious what those little spike or cone shaped bits are that surround the trilo and in fact fill the shale in the one piece at least! (trilo is about 34mm long)
Coronocephalina jastrowi, Silurian: Wenlockian (Sepkoski) - Mtns of W. Hunan, China (have also seen Hubei and Henan, and the genus name Coronocephalus but maybe that's for the other species) ??
- length ~5.5cm