摘要
Oelandiella was first reported in the Jialao Formation at Balang village, Jianhe County, Guizhou Province, including 1 species Oelandiella cf. accordinonata ( Runnegar and Jell, 1976) emended Yang et al.,2012. Oelandiella was found in the Jialao Formation with symmetrical comarginal ribs crossing the dorsum suggesting it may form in normal shallow一 water environment. This study confirms Oelandiella in the Jialao Formation is the highest layer in the Cambrian of the southeast part of Guizhou and provides material for taxonomy and early radiation of Cambrian helcionelloids.
