ammonites
Blackwelderia nodosaria Zhu 1987 (trilobite)

Trilobita - Lichida - Damesellidae

Full reference: H. Y. Zhu. 1987. Cambrian trilobites from Xijiadian, Junxian, Hubei. Acta Palaeontologica Sinica 26(1):86-95

Belongs to Blackwelderia according to H. Y. Zhu 1987

Sister taxa: Blackwelderia chiawangensis, Blackwelderia fortis, Blackwelderia liaoningensis, Blackwelderia mui, Blackwelderia octaspina, Blackwelderia paronai, Blackwelderia pingluensis, Blackwelderia shengi, Blackwelderia sinensis, Blackwelderia triangularis, Blackwelderia youshuica

Type specimen: Its type locality is Xijiadian, Xugou Formation, which is in a Guzhangian/Paibian marine limestone in the Xugou Formation of China

Ecology: fast-moving low-level epifaunal carnivore