Zanno in 2010 indicated that the anatomical traits that were originally used to characterize "N." bohlini are now known to be present in other therizinosaur taxa. Hartman with colleagues in 2019 recovered "N." bohlini as a therizinosaurid in a clade joined by Segnosaurus and Nothronychus. Around 2005 partial therizinosaur material was collected from the Laijia Formation and later used to represent "Tiantaiosaurus sifengensis" (alternatively "Tiantaisaurus"), which is a currently unpuslihed and informal therizinosaur taxon. Qian and team in 2012 noted that a whole manuscript describing the taxon was written in 2007 but never officially published. In 1998 Zhao Xijin and Xu Xing briefly discovered a partial lower jaw with teeth (IVPP V11579) from the Early Jurassic-aged Lufeng Formation in Yunnan, and concluded that this specimen represented the oldest known record of a coelurosaurian theropod. Based mainly on teeth morphology, they indicated therizinosaur affinities. The specimen was latter described in depth in 2001 and used as the holotype specimen for the new genus and species Eshanosaurus deguchiianus, named by Xing and colleagues. The team reinforced therizinosaur relationships, arguing that the teeth morphology of Eshanosaurus can be differentiated from sauropodomorphs. In the same 2001 however, James I. Kirkland and Douglas G. Wolfe noted that the holotype of Eshanosaurus preserves traits only seen in sauropodomorphs. Paul M. Barrett in 2009 examined the specimen in detail, noting six features shared with therizinosaurs but not exhibited by prosauropods, agreeing in that Eshanosaurus is a therizinosaur. In 2012 the Mongolian Academy of Sciences recovered a partial theropod specimen from the Bayan Shireh Formation at the Urlibe Khudak (also Ulribe Khuduk) locality. The specimen was in a 2015 abstract by Yoshitsugu Kobayashi and team briefly described and identified as a new therizinosaur taxon distinct from the concurring Enigmosaurus, Erlikosaurus and Segnosaurus. The Urlibe Khudak therizinosaur is most notably for its manual morphology which consist of only two fingers (didactyly), in a similar manner to tyrannosaurids. Such trait makes it the only known two-fingered therizinosaur. Description Therizinosaurs spanned a large range of sizes, from the smaller Beipiaosaurus ( long) and Jianchangosaurus ( long) to the large-sized long Segnosaurus and Suzhousaurus. Therizinosaurus itself, obtained the top dimensions of the group, growing up to long and weighing over , dimensions that make the genus among the largest-known theropods. Therizinosaurs had a very distinctive, often confusing set of characteristics. Their long necks, wide torsos, and hind feet with four toes used