Zhuchengtitan (meaning "Zhucheng titan") is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous of Shandong, China.
The deltopectoral crest, which is located on the front surface near the top end of the bone, is very prominent, and bears a hook-like process about 1/3 of the way down its length.
[1] Near the top end on the back of the bone, there are two depressions bordering a central ridge, which extends upwards to support the rounded humeral head.
Thus, they hypothesized that Opisthocoelicaudia and Zhuchengtitan may be closely related, but noted that this conclusion would need to be confirmed by the discovery of additional material.
As for other Asian titanosaurs, Zhuchengtitan can be distinguished from Qingxiusaurus, Huabeisaurus, Borealosaurus, and Phuwiangosaurus by the greater width of the top end of its humerus as well as its better-developed deltopectoral crest.
Based on argon-argon dating of the basalt layer at its top end, the Hongtuya Member at Zangjiazhuang has been estimated at 73.5 Ma in age, which places it during the Campanian epoch of the Cretaceous period.
[2] Other dinosaurs found at Zangjiazhuang include the hadrosaurid ornithopod Shantungosaurus giganteus (referred to by Mo and colleagues as "Huaxiasaurus maximus"),[7][8] the tyrannosaurid theropod Zhuchengtyrannus magnus,[9] and the ceratopsid Sinoceratops zhuchengensis.