| Xinlong Formation | |
|---|---|
| Stratigraphic range: ?Aptian-Albian ~120–100 Ma | |
| Type | Geological formation |
| Lithology | |
| Primary | Sandstone,mudstone |
| Other | Conglomerate,marl |
| Location | |
| Coordinates | 22°36′N107°54′E / 22.6°N 107.9°E /22.6; 107.9 |
| Approximate paleocoordinates | 23°12′N116°06′E / 23.2°N 116.1°E /23.2; 116.1 |
| Region | Guangxi |
| Country |  China |
  Xinlong Formation (China) Show map of China Xinlong Formation (Guangxi) Show map of Guangxi | |
TheXinlong Formation (sometimes called the "Napai Formation", or misspelt as "Napan Formation"[1]) is an Early Cretaceous geologicformation inGuangxi, southern China.[2]
Dinosaur remains diagnostic to thegenus level are among the fossils that have been recovered from the formation.[3]
| Dinosaurs of the Xinlong Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Asiatosaurus[4] | A. kwangshiensis[4] | Teeth, three cervical vertebrae and ribs | Indeterminatesauropod | |||
| Datanglong[5] | D. guangxiensis | Last dorsal (back) vertebra (according to the descriptors the fourteenth), continues over the five sacral vertebrae, and ends with the second tail vertebra. The sacrum is attached to a left ilium with the upper parts of the left pubic bone and the left ischium, and one piece of the right ilium | A member ofCarcharodontosauria | |||
| Fusuisaurus[6] | F. zhaoi[6] | Partial pelvis and caudal vertebrae | Atitanosauriform | |||
| Liubangosaurus[7] | L. hei[7] | Fifth to ninth dorsal vertebrae | Aneusauropod | |||
| Napaisaurus[8] | N. guangxiensis[8] | Right ilium and ischium | Aniguanodontian | |||
| Prodeinodon[9] | P. kwangshiensis | Several teeth, fragmentary tibia, fragmentary fibula | Indeterminatetheropod | |||
| Psittacosauridae?[8] | Indeterminate | Several different taxa of possible Psittacosaurid classification. | ||||
| Siamosaurus[10] | Indeterminate, possiblyS. fusuiensis[10] | Four teeth | Spinosaurid originally known as"Sinopliosaurus" fusuiensis[11] |  | ||
Color key
| Notes Uncertain or tentative taxa are insmall text; |