Asaphida

Sinosaukia distincta

Order Asaphida / Superfamily Dikelokephaloidea / Family Saukiidae

Jiangshanian (Furongian, Cambrian)Guangxi

Sinosaukia distincta — photo 1 — Photo 1 · Type specimen (Guangxi; Zhou Tianmei et Complete dorsal exoskeleton Complete dorsal exoskeleton al. 1977) (Guangxi; Baishui) (Guangxi; Liangliang Fengqing) Complete dorsal exoskeleton, part and counterpart (Guangxi; Guodong)

Sinosaukia distincta — photo 2 — Photo 2 · Type specimen (Guangxi; Zhou Tianmei et Complete dorsal exoskeleton Complete dorsal exoskeleton al. 1977) (Guangxi; Baishui) (Guangxi; Liangliang Fengqing) Complete dorsal exoskeleton, part and counterpart (Guangxi; Guodong)

Sinosaukia distincta — photo 3 — Photo 3 · Type specimen (Guangxi; Zhou Tianmei et Complete dorsal exoskeleton Complete dorsal exoskeleton al. 1977) (Guangxi; Baishui) (Guangxi; Liangliang Fengqing) Complete dorsal exoskeleton, part and counterpart (Guangxi; Guodong)

Sinosaukia distincta — photo 4 — Photo 4 · Type specimen (Guangxi; Zhou Tianmei et Complete dorsal exoskeleton Complete dorsal exoskeleton al. 1977) (Guangxi; Baishui) (Guangxi; Liangliang Fengqing) Complete dorsal exoskeleton, part and counterpart (Guangxi; Guodong)

Sinosaukia distincta — photo 5 — Photo 5 · Type specimen (Guangxi; Zhou Tianmei et Complete dorsal exoskeleton Complete dorsal exoskeleton al. 1977) (Guangxi; Baishui) (Guangxi; Liangliang Fengqing) Complete dorsal exoskeleton, part and counterpart (Guangxi; Guodong)

Classification

Order Asaphida / Superfamily Dikelokephaloidea / Family Saukiidae

Genus

Sinosaukia Sun, 1935

Genus author

Sun Yunchu

Genus etymology

sin-, China; Saukia, a trilobite genus name

Species

S. distincta Zhou in Zhou et al., 1977

Species author

Zhou Tianmei

Species etymology

distincta, distinct, separate

Age

Jiangshanian (Furongian, Cambrian)

Distribution

Guangxi

Synonyms

Saukia distincta

Diagnosis

Dorsal shield elongate-elliptical, surface covered with tubercles. Cephalon semicircular; glabella long-cylindrical, slightly constricted medially; three pairs of glabellar furrows, S1 crossing the glabella and arched backward, S2 shallower, S3 faint; occipital furrow straight, occipital ring wide; dorsal furrows wide and deep; palpebral lobes large with wide eye furrows; anterior branches of facial sutures slightly divergent forward, posterior branches oblique backward-outward; fixigenae extremely narrow; anterior border wide, tri- angularly protruding forward; librigenae wide with extremely long genal spines, the anterior parts of the librigenae extending forward in a spine-like manner around the anterior border. Thorax of 11 segments, axis subequal in width to pleurae; pleural furrows wide and deep, pleural spines short. Pygidium small, subfusiform; axis of three rings plus a terminal piece, reaching the border; pleural furrows deep; border narrow.