Shipingia Shen, 1976

LI, GANG, 2022, SEM morphological study of the Late Triassic clam shrimp Shipingia hebaozhaiensis (Spinicaudata, Crustacea) from Yunnan, southwestern China, Palaeoentomology 5 (4), pp. 298-304 : 299

Genus Shipingia Shen in Zhang et al., 1976

Type species. Shipingia hebaozhaiensis Shen in Zhang et al., 1976, from the Upper Triassic Ganhaizi Formation of Yunnan, China .

Emended diagnosis. Carapace small or medium in size, rounded, oval or elliptical in outline. Dorsal margin long and straight, small umbo located at its anterior part. Growth bands wide in the upper part of the carapace, and narrow near the ventral margin. Growth bands near the umbo ornamented with irregularly arranged small and large sized reticulations. Growth bands in the middle part of the carapace ornamented with large sized reticulations in the upper part, and small sized reticulations in the lower part of each band. Growth bands near the venter ornamented with small sized reticulations.

Locality and horizon. The middle Arnstadt Formation, the upper Stubensandstein Formation in Germany; the middle Groveton Member of the Bull Run Formation in Culpeper Basin, the Heidlersburg Member of the middle Gettysburg Shale Formation in Gettysburg Basin, the middle and upper Passaic Formation in the Newark Basin in the United States; the upper Blomidon Formation in the Fundy Basin in Canada; the Ganhaizi Formation in Shiping County of Yunnan Province, China.

Remarks. In the original description of Shipingia Shen in Zheng et al., 1976 only large sized reticulations were mentioned on growth bands near the umbo. According to the new SEM micrography, small and large sized reticulations are irregularly arranged on growth bands near the umbo.