The Jehol Biota includes all the living organisms – the ecosystem – of northeastern China between 133 and 120 million years ago. This is the Lower Cretaceous...

part of the Jehol group, defined by Gu (1962 and 1983) as a group of geological formations including the Jehol Coal-bearing Beds, the Jehol Oil Shale Beds...

primitive birds, pterosaurs, and other organisms (see Jehol Biota). It is a member of the Jehol group. The exact age of the Jiufotang has been debated for...

sauropod from the Yixian Formation, which is part of the well-known Jehol Group. The genus name refers to the region Dongbei and to Greek titan, "giant"...

"Dongbeititan dongi, the first sauropod dinosaur from the Lower Cretaceous Jehol Group of western Liaoning Province, China". Acta Geologica Sinica (English...

dromaeosaurid dinosaur from the Lower Cretaceous Jehol Group of western Liaoning and niche differentiation among the Jehol dromaeosaurids" (PDF). Vertebrata PalAsiatica...

collectively as the Jehol Group, they include the Yixian Formation, Jiufotang Formation and Tiaojishan Formation. The name Jehol derives from a now defunct...

(2010). "A new ornithuromorph (Aves: Ornithothoraces) bird from the Jehol Group indicative of higher-level diversity" (PDF). Journal of Vertebrate Paleontology...

as Anchiornis and Archaeopteryx. The fossilization conditions of the Jehol group are very accommodating to the preservation of soft structures in fossils...

embedded theropod tooth: direct evidence for feeding behaviour in the Jehol group, China." Lethaia, (advance online publication). doi:10.1111/j.1502-3931...