[D] Xianshanosaurus shijiagouensis [sG] [T]
Describer
Lü, Xu, Jiang, Jia, Li, Yuan, Zhang & Ji Q. 2010
Time
Cretaceous Late Cenomanian
Classification
Saurischia Sauropodomorpha Sauropoda [Eusauropoda ] [Neosauropoda]
Diet
Herbivore
Fossilsite
Mangchuan Formation, Ruyang Basin, Shijiagou village, Liudian Town of Luoyang City, Henan Province, China
Info
Abstract
A new dinosaur fauna, the Ruyang Gigantic Sauropod Dinosaurian Fauna from the early Late Cretaceous of the Ruyang Basin is named. The new dinosaurian fauna is dominated by large-sized sauropod dinosaurs, companying with theropod dinosaurs, such as ornithomimid, oviraptorid, spinosaurid and carcharodontosaurid dinosaurs.
Two new taxa are erected, they are a oviraptorid dinosaur Luoyanggia liudianensis gen. et sp. nov., and a sauropod Xianshanosaurus shijiagouensis gen et sp. nov. The dinosaur assemblage from the Ruyang Basin indicates that the dinosaur-bearing deposits are Cenomanian in age.
Holotype
Ten naturally articulated anterior caudal vertebrae and one haemal arch (KLR-07-62-6), one nearly complete right coracoid (KLR-07-62-59), one complete left femur (KLR-07-62-15), and several complete (KLR-07-62-3a, KLR-07-62-59-1) and incomplete dorsal ribs. The specimens are housed in the Henan Geological Museum.
Etymology
The generic name refers to Xianshan (Xian mountain), where the holotype was found nearby; sauros, Greek for lizard, reptile.Diagnosis: as for the only species. The specific name refers to the Shijiagou of Haoling village, where the holotype locality belongs to.
Locality and Horizon
Shijiagou of Haoling Village, Liudian Town, Ruyang County of Henan Province.Mangchuan Formation, early Late Cretaceous (Bureau of Geology and Mineral Resources of Henan Province, 1989). The upper unit of the deposits ( ? Early Late Cretaceous) of this study.
Diagnosis
A large-sized sauropod bearing the following characters: The elongated tooth with a distinct ridge on the lingual surface of the tooth crown; neural spines of anterior caudal vertebrae plate-like with coarse areas on their middle portions of the anterior and posterior surfaces; distinct fossae present on the anterolateral surface of the base of the prezygapophysis and the anterior surface of the base of the transverse process; coracoid foramen is located closely to the scapula-coracoid suture; and shallow concavity present on the proximal end of the dorsal ribs.
Description
A sauropod dinosaur tooth was discovered from Shijiagou Quarry. The tooth is about 4 cm long (41HIII-0015). The tooth is elongated, with a distinct ridge on the lingual surface of the tooth crown. The tooth crown is spatulate. The tooth has a wrinkled enamel and no denticles are present along the margin of the tooth, similar to tooth of Brachiosaurus (Carpenter and Tidwell, 1998; Upchurch et al., 2004). The tooth morphology is also similar to that of Euhelopus zdanskyi, but differs from other sauropod teeth. The sauropod dinosaur from the Shijiagou Quarry may have a close relationship with brachiosaurid dinosaurs.
Lü, Xu, Jiang, Jia, Li, Yuan, Zhang & Ji Q. 2010
Time
Cretaceous Late Cenomanian
Classification
Saurischia Sauropodomorpha Sauropoda [Eusauropoda ] [Neosauropoda]
Diet
Herbivore
Fossilsite
Mangchuan Formation, Ruyang Basin, Shijiagou village, Liudian Town of Luoyang City, Henan Province, China
Info
Abstract
A new dinosaur fauna, the Ruyang Gigantic Sauropod Dinosaurian Fauna from the early Late Cretaceous of the Ruyang Basin is named. The new dinosaurian fauna is dominated by large-sized sauropod dinosaurs, companying with theropod dinosaurs, such as ornithomimid, oviraptorid, spinosaurid and carcharodontosaurid dinosaurs.
Two new taxa are erected, they are a oviraptorid dinosaur Luoyanggia liudianensis gen. et sp. nov., and a sauropod Xianshanosaurus shijiagouensis gen et sp. nov. The dinosaur assemblage from the Ruyang Basin indicates that the dinosaur-bearing deposits are Cenomanian in age.
Holotype
Ten naturally articulated anterior caudal vertebrae and one haemal arch (KLR-07-62-6), one nearly complete right coracoid (KLR-07-62-59), one complete left femur (KLR-07-62-15), and several complete (KLR-07-62-3a, KLR-07-62-59-1) and incomplete dorsal ribs. The specimens are housed in the Henan Geological Museum.
Etymology
The generic name refers to Xianshan (Xian mountain), where the holotype was found nearby; sauros, Greek for lizard, reptile.Diagnosis: as for the only species. The specific name refers to the Shijiagou of Haoling village, where the holotype locality belongs to.
Locality and Horizon
Shijiagou of Haoling Village, Liudian Town, Ruyang County of Henan Province.Mangchuan Formation, early Late Cretaceous (Bureau of Geology and Mineral Resources of Henan Province, 1989). The upper unit of the deposits ( ? Early Late Cretaceous) of this study.
Diagnosis
A large-sized sauropod bearing the following characters: The elongated tooth with a distinct ridge on the lingual surface of the tooth crown; neural spines of anterior caudal vertebrae plate-like with coarse areas on their middle portions of the anterior and posterior surfaces; distinct fossae present on the anterolateral surface of the base of the prezygapophysis and the anterior surface of the base of the transverse process; coracoid foramen is located closely to the scapula-coracoid suture; and shallow concavity present on the proximal end of the dorsal ribs.
Description
A sauropod dinosaur tooth was discovered from Shijiagou Quarry. The tooth is about 4 cm long (41HIII-0015). The tooth is elongated, with a distinct ridge on the lingual surface of the tooth crown. The tooth crown is spatulate. The tooth has a wrinkled enamel and no denticles are present along the margin of the tooth, similar to tooth of Brachiosaurus (Carpenter and Tidwell, 1998; Upchurch et al., 2004). The tooth morphology is also similar to that of Euhelopus zdanskyi, but differs from other sauropod teeth. The sauropod dinosaur from the Shijiagou Quarry may have a close relationship with brachiosaurid dinosaurs.