Ptychopariida

Solenoparia intermedia

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Solenopleuridae

Drumian (Miaolingian, Cambrian)Shandong, North China and southern Northeast China

Solenoparia intermedia — photo 1 — Photo 1 · Holotype USNM 58072 (Shandong; left: Peng 2020; right: colour photograph, SNMNH) Complete dorsal exoskeleton in shale (Shandong; Yadong)

Solenoparia intermedia — photo 2 — Photo 2 · Holotype USNM 58072 (Shandong; left: Peng 2020; right: colour photograph, SNMNH) Complete dorsal exoskeleton in shale (Shandong; Yadong)

Solenoparia intermedia — photo 3 — Photo 3 · Holotype USNM 58072 (Shandong; left: Peng 2020; right: colour photograph, SNMNH) Complete dorsal exoskeleton in shale (Shandong; Yadong)

Solenoparia intermedia — photo 4 — Photo 4 · Holotype USNM 58072 (Shandong; left: Peng 2020; right: colour photograph, SNMNH) Complete dorsal exoskeleton in shale (Shandong; Yadong)

Classification

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Solenopleuridae

Genus

Solenoparia Kobayashi, 1935

Genus author

Kobayashi T.

Genus etymology

solen-, Greek, furrow, tube; pari-, Greek, cheek

Species

S. intermedia (Walcott, 1906)

Species author

Walcott C. D.

Species etymology

intermedia, Latin, intermediate

Age

Drumian (Miaolingian, Cambrian)

Distribution

Shandong, North China and southern Northeast China

Synonyms

Ptychoparia (Liostracus) intermedia; Solenoparia hemicycla; Solenoparops gengzhenensis; Changqingia intermedia; Changqingia liaoningensis (in part)

Diagnosis

Dorsal shield with dense small and sparse large tubercles. Cranidium subtrapezoidal; dorsal furrows deep; glabella strongly convex, conical to subconical with pointed-rounded front; 3 pairs of glabellar furrows; occipital furrow deep; occipital ring wide medially with a small occipital node; fixigenae narrow in the palpebral area; palpebral lobes short, eye ridges faint; librigenae narrow with short genal spines. Thorax of 13 segments; axis slightly narrower than pleurae; pleural furrows wide and deep, pleural spines short. Pygidium small, elliptical; axis with 2 axial rings and a terminal piece; border narrow.

Remarks

The first complete dorsal exoskeleton of this species was discovered by Yadong, a trilobite enthusiast from Shandong.