Haifengella

Haifengella corona is the only known species of the extinct arthropod genus Haifengella, described in 2014 from the Early Cambrian Chengjiang Lagerstätte in Yunnan, China. It is a helmetiid arthropod closely related to trilobites, notable for its crown-like pygidium that inspired its species name. It belongs to the extinct order Helmetiida within the clade Conciliterga, a group of trilobite-like artiopods. Name origin: The genus name Haifengella comes from Haifeng village near the fossil site; the species epithet corona refers to the crown-shaped outline of its pygidium. Haifengella has six thoracic tergites and two pairs of tail spines. Each of the thoracic tergites exhibits a pair of long spines projecting from the posterolateral corners.
In 2025, Losso, Caron Ortega-Hernández in their reanalysis of Helmetia expansa recovered Haifengella as a sister taxon of Rhombicalvaria.