Corynexochida

Blackwelderia sp. 3

Order Corynexochida / Suborder Leiostegiina / Superfamily Dameselloidea / Family Damesellidae / Subfamily Damesellinae

Guzhangian (Miaolingian, Cambrian)Shandong
Blackwelderia sp. 3 — photo 1
Photo 1 · specimens Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Michael Mi) (Shandong; Guodong) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Y.W) (Shandong; Pengcheng Jianke)
Blackwelderia sp. 3 — photo 2
Photo 2 · specimens Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Michael Mi) (Shandong; Guodong) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Y.W) (Shandong; Pengcheng Jianke)
Blackwelderia sp. 3 — photo 3
Photo 3 · specimens Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Michael Mi) (Shandong; Guodong) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Y.W) (Shandong; Pengcheng Jianke)
Blackwelderia sp. 3 — photo 4
Photo 4 · specimens Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Michael Mi) (Shandong; Guodong) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Y.W) (Shandong; Pengcheng Jianke)
Classification
Order Corynexochida / Suborder Leiostegiina / Superfamily Dameselloidea / Family Damesellidae / Subfamily Damesellinae
Genus
Blackwelderia Walcott, 1906
Genus author
Walcott C. D.
Genus etymology
Blackwelder, a surname, referring to E. Blackwelder, an early-20th-century collector of North China trilobite
Species
Blackwelderia sp. 3
Species author
/
Species etymology
/
Age
Guzhangian (Miaolingian, Cambrian)
Distribution
Shandong
Diagnosis
Dorsal shield densely verrucose. Cranidium wide; glabella subconical with three pairs of glabellar furrows; palpebral lobes slightly convex; preglabellar field narrow; anterior border medium-wide, slightly upturned; librigenae with long genal spines. Thorax of 12 segments; axis slightly narrower than pleurae; pleural furrows transverse, pleural spines long and curved. Pygidium triangular apart from spines; axis long-conical; border indistinct, with 7 pairs of slender spines, the sixth pair slightly longer.
Remarks
This species occurs in the Blackwelderia paronai Zone.