Longshan, Yanji (Cretaceous to of China)

Also known as Burhatong River

Where: Jilin, China (42.9° N, 129.5° E: paleocoordinates 50.3° N, 122.2° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Longjing Formation, Late/Upper Albian to Late/Upper Albian (105.3 - 93.9 Ma)

• The beds at the Longshan locality are part of the lower portion of the Longjing Formation, which conformably overlies the Dalazi Formation (Jin et al., 2018; Zhong et al., 2021). Paleontological and radiochronological data indicate an Albian to Cenomanian age for the Longjing Formation (Jin et al., 2018). The fossil-bearing site lies a short distance above a tuff layer from near base of the Longjing Formation that has recently been dated to 101.039 ± 0.061 Ma (Zhang et al., 2018; Zhong et al., 2021); this finding is consistent with other U-Pb radiochronological dating of the uppermost part of the Dalazi Formation to 105.14 ± 0.37 (Zhong et al., 2021). Thus, the Longshan section likely includes the Albian/Cenomanian boundary, and most of the Longjing Formation can be considered Cenomanian in age (Zhong et al., 2021).

• bed-level stratigraphic resolution

Environment/lithology: fluvial; lithology not reported

Size class: macrofossils

Collected in 2016-2017

Primary reference: C.-C. Liao, A. Moore, C. Jin, T. Yang, M. Shibata, F. Jin, B. Wang, D. Jin, Y. Guo and X. Xu. 2021. A possible brachiosaurid (Dinosauria, Sauropoda) from the mid-Cretaceous of northeastern China. PeerJ 9:e11957:1-35 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 221681: authorized by Philip Mannion, entered by Philip Mannion on 20.08.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia -
Macronaria indet. Sereno 1997 sauropod
YJDM 00006
 Saurischia - Brachiosauridae
Brachiosauridae indet. Riggs 1904 brachiosaurid
YJDM 00008, mandible & maxilla
 Loricata - Paralligatoridae
Yanjisuchus longshanensis n. gen. n. sp. Rummy et al. 2021 crocodilian
YJDM 00009
 Testudines -