Jinghediscus

Jinghediscus Xiang & Zhang, 1985 ^[1] is a genus of Eodiscinid trilobite belonging to the family Weymouthiidae Kobayashi T. (1943),^[2] Order Agnostida (Salter 1864) ^[3] It lived during the lower Middle Cambrian, with remains found in China (Xinjiang) and Australia (Queensland).

Jinghediscus Temporal range: early Middle Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Jinghediscus nummularius
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Agnostida
Family:	Weymouthiidae
Genus:	Jinghediscus Xiang & Zhang, 1985
species
J. nummularius Xiang & Zhang, 1985 (type species)

Species

Jinghediscus nummularius Xiang and Zhang, 1985.

Distribution

Description

Like all Weymouthiidae, Jinghediscus lacks eyes and facial sutures. Cephalon semi-elliptical. Glabella has one transglabellar furrow and inflated posterior lobe that widens towards rear. Preglabellar field broad (sag.) and confluent with uniformly wide (tr.) genal areas. Occipital ring (L0) ill-defined and without spine. cephalic border is only gently convex and of uniform width. Pygidium with strongly conical axis composed of ten axial rings; pleural fields smooth and defined from axis merely by a change in slope. Pygidial border broadens considerably towards rear and is wider (sag.) posteriorly than width (tr.) of the smooth pleural fields.^[4]