Lingyuanosaurus is a genus of therizinosaurian theropod from the Early Cretaceous of Liaoning Province, China. The type and only species is L. sihedangensis. It was uncovered within one of the formations that make up the Jehol biota, although the exact geological formation — and therefore also its precise geological age — is unknown. ==Discovery== thumb|left|A map of the area of China where Lingyuanosaurus was found, with the town of Sihedang visible on the left (C) The holotype of Lingyuanosaurus, given the designation IVPP V 23589, was discovered at a fossil locality near a town called Sihed
Lingyuanosaurus is a genus of therizinosaurian theropod from the Early Cretaceous of Liaoning Province, China. The type and only species is L. sihedangensis. It was uncovered within one of the formations that make up the Jehol biota, although the exact geological formation — and therefore also its precise geological age — is unknown. ==Discovery== thumb|left|A map of the area of China where Lingyuanosaurus was found, with the town of Sihedang visible on the left (C) The holotype of Lingyuanosaurus, given the designation IVPP V 23589, was discovered at a fossil locality near a town called Sihedang. The specimen was recovered inside of seven rock slabs of varying sizes. The locality is just outside of the city of Lingyuan in Liaoning Province. The precise age of this locality is uncertain. The strata from which the holotype was found are a part of the Jehol Group, but it is not known for certain if they belong to the Yixian Formation or to the Jiufotang Formation. Given the fact that the entire specimen was found in a one-square-meter area, no other fossils were found in proximity, there were no duplicated elements, and all the bones had the same color and preservation, the fossils are regarded as belonging to a single individual.
Lingyuanosaurus was formally described and named in 2019 in a publication authored by Xi Yao, Chun-Chi Liao, Corwin Sullivan, and Xu Xing. The generic name, Lingyuanosaurus, is in reference to county-level city of Lingyuan, and the Ancient Greek word saûros (σαῦρος), Latinized as saurus, meaning "lizard". The specific name, sihedangensis, is in reference to its place of discovery as well, the town of Sihedang.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).