on specimen ZhM V.001. This specimen was recovered in 1972 from the Tangshang Formation and consists of a partial tibia and partial right pes (foot) largely lacking metatarsals. Dong referred it to the genus mainly based on similarities between the unguals of this specimen and those of C. tashuikouensis. Barsbold and Maryanska in 1990 considered C. zheziangensis as a tentative segnosaur (later known as therizinosaurs) based on its relatively short and robust pedal phalanges and enlarged, strongly curved unguals, mostly similar to Segnosaurus. As this taxon may lie outside the genus Chilantaisaurus, they listed this species as "Chilantaisaurus" zheziangensis. Although Glut (1997) stated this specimen may have been based on part of the holotype of Nanshiungosaurus brevispinus (based on a pers. comm from Dong to Molnar in 1984), Dong in 1979 described both taxa from largely different formations and localities. Zanno in 2010 argued that the notorious side to side compression of the unguals reflect therizinosaur affinities, although examinations to the preserved tibia are required for further conclusions. In 2012 Mai-Ping Qian and colleagues placed "C". zheziangensis in the family Therizinosauridae based on its pes morphology, which is consistent to other therizinosaurids. They also illustrated most of the preserved pes. Hartman with team in 2019 added "C". zheziangensis to a phylogenetic analysis and recovered it within Therizinosauroidea in a polytomy with Alxasaurus, Enigmosaurus and therizinosaurids. In 1997 Dong Zhiming and You Hailu named and described a supposed second species of Nanshiungosaurus, N. bohlini, based on specimen IVPP V 11116 found in 1992 at Early Cretaceous strata from the Zhonggou Formation, Xinminbao Group. It consists of 11 cervical and 5 dorsal vertebrae with some ribs. In order to contain both N. brevispinus and N. bohlini they coined the Nanshiungosauridae family. Dong and Yu presented no clear evidence regarding the assignment of this new species to Nanshiungosaurus. Li and colleagues in their 2007 description of Suzhousaurus pointed out that N. bohlini might be synonymous with the former, as both are found in the same geological group and also incompletely known. As per terms of taxonomic priority, the species name would be Suzhousaurus bohlini. However, they noted that a direct comparison between specimens is difficult to near impossible because there is no overlapping material (besides dorsal vertebrae) and the holotype of N. bohlini is apparently lost. Li and team disagree in that this species belong to Nanshiungosaurus and listed it as "Nanshiungosaurus" bohlini.