The Penglaizhen Formation (), is a geological
formation in
Sichuan,
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
. It was formerly thought to be
Late Jurassic in age. However, the underlying
Suining Formation
The Suining Formation () is a geological formation in China whose strata date back to the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. A 2019 paper shows zircon dating of the Suining Formati ...
has been dated to the Mid Cretaceous, so the formation must be this age or later However a subsequent study suggested that the dates for the formation had been altered by geologic processes, and there dating the Suining Formation to the around the Jurassic Cretaceous boundary about 145 Ma, which means that Penglaizhen Formation is likely Early Cretaceous in age.
Dinosaur remains are among the fossils that have been recovered from the formation.
[Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 550–552. .]
Vertebrate paleofauna
Indeterminate ornithischian tracks have been recovered from Penglaizhen outcrops in Sichuan, China.
See also
*
List of dinosaur-bearing rock formations
References
Geologic formations of China
Cretaceous System of Asia
Cretaceous China
Ichnofossiliferous formations
Paleontology in Sichuan
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