Trilobite fauna of the Kaili Formation (uppermost Lower Cambrian-lower Middle Cambrian) from southeasternGuizhou , South China

The terminal Early Cambrian extinction of the Redilichiida and other trilobites from the Kaili Formation is documented for the first time. Kaili's trilobite fauna includes 4 orders, 17 families and 3 subfamilies, 62 genera and subgenera, 145 species, subspecies and species indet, of which, 1 subfamily, 6 genera, 2 subgenera and 53 species and subspecies are new.

1. Agnostida Salter, 1864
2. Redlichiida Richter, 1933
3. Corynexochida Kobayashi, 1935
4. Order uncertain
5. Ptychopariida Swinnerton, 1915