''Jinghediscus'' Xiang & Zhang, 1985 is a genus of Eodiscinid trilobite belonging to the family Weymouthiidae Kobayashi T. (1943), Order Agnostida (Salter 1864) SALTER, J. W. 1864: On some new fossils from the Lingula-flags of Wales. ''Quarterly Journal of the Geological Society of London'', 20, 233–241. It lived during the lower Middle Cambrian, with remains found in China (Xinjiang) and Australia (Queensland).

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.

References

Weymouthiidae Agnostida genera Cambrian trilobites Fossils of China Cambrian trilobites of Australia {{agnostida-stub Cambrian genus extinctions