The Liangtoutang Formation, also referred to as the Laijia Formation is a geological formation located in Zhejiang, China. Its strata date back to the Albian to Cenomanian stages of the Cretaceous period, between 105.9 and 96 million years ago. The lithology primarily consists of red sandstone.

Fossil content

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon MorphotaxonNotes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
TaxonReclassified taxonTaxon falsely reported as presentDubious taxon or junior synonymIchnotaxonOotaxonMorphotaxon

Dinosaurs

Ankylosaurs

Ankylosaurs of the Liangtoutang Formation
GenusSpeciesLocationStratigraphic positionMaterialNotesImages
JinyunpeltaJ. sinensis"An almost complete skull" and two partial postcranial skeletonsA ankylosaurine ankylosaurind

Ornithopods

Ornithopods of the Liangtoutang Formation
GenusSpeciesLocationStratigraphic positionMaterialNotesImages
YueosaurusY. tiantaiensis"Partial postcranial skeleton"A thescelosaurine thescelosaurid

Eggs

Eggs of the Liangtoutang Formation
GenusSpeciesLocationStratigraphic positionMaterialNotesImages
MacroelongatoolithusM. xixiaensis
PachycorioolithusP. jinyunensis
TestudoolithusT. jiangi

Bibliography

  • Zheng, Wenjie; Jin, Xingsheng; Azuma, Yoichi; Wang, Qiongying; Miyata, Kazunori; Xu, Xing (2018), "The most basal ankylosaurine dinosaur from the Albian–Cenomanian of China, with implications for the evolution of the tail club", Scientific Reports, 8 (1) 3711, Bibcode:, doi:, PMC , PMID
  • Lawver, D. R.; Jin, X.; Jackson, F. D.; Wang, Q. (2016), "An avian egg from the Lower Cretaceous (Albian) Liangtoutang Formation of Zhejiang Province, China", Journal of Vertebrate Paleontology, 36 (3): e1100631:1–7, Bibcode:, doi:
  • Zheng, Wenjie; Jin, Xingsheng; Shibata, Masateru; Azuma, Yoichi; Yu, Fangming (2012), "A new ornithischian dinosaur from the Cretaceous Liangtoutang Formation of Tiantai, Zhejiang Province, China", Cretaceous Research, 34: 208–219, Bibcode:, doi:
  • Jin, X.; Azuma, Y.; Jackson, F. D.; Varricchio, D. J. (2007), "Giant dinosaur eggs from the Tiantai basin, Zhejiang province, China", Canadian Journal of Earth Sciences, 44 (1): 81–88, Bibcode:, doi: