†Blackwelderia Walcott 1906 (trilobite)
Trilobita - Lichida - Damesellidae
Parent taxon: Damesellidae according to P. A. Jell and J. M. Adrain 2003
Sister taxa: Ariaspis, Bergeronites, Blackwelderioides, Damesella, Damesops, Dipentaspis, Drepanura, Guancenshania, Haibowania, Meringaspis, Metashantungia, Palaeadotes, Parablackwelderia, Paradamesella, Protaitzehoia, Shantungia, Stephanocare, Taihangshaniashania, Taitzehoia, Teinistion
Subtaxa: Blackwelderia chiawangensis, Blackwelderia fortis, Blackwelderia liaoningensis, Blackwelderia mui, Blackwelderia nodosaria, Blackwelderia octaspina, Blackwelderia paronai, Blackwelderia pingluensis, Blackwelderia shengi, Blackwelderia sinensis, Blackwelderia triangularis, Blackwelderia youshuica
Ecology: fast-moving low-level epifaunal carnivore