{{Short description|Geologic formation in China}} {{Infobox rockunit | name = Liangtoutang Formation | image = | caption = | type = Geological formation | age = Albian-Cenomanian<br>~{{fossilrange|105.9|96}} | period = Albian | prilithology = Sandstone | otherlithology = | namedfor = | namedby = | region = Zhejiang | country = China | coordinates = {{coord|28.7|N|120.2|E|display=inline,title}} | paleocoordinates = {{coord|36.3|N|120.0|E|display=inline}} | unitof = Tiantai Group | subunits = | underlies = Chichengshan Formation | overlies = Tangshang Formation | thickness = About {{convert|300|m|ft|abbr=on}} | extent = Huzhen Basin | area = | map = {{Location map+ | China#China Zhejiang | relief = 1 | width = 250 | float = center | places = {{Location map~ | China#China Zhejiang | lat_deg = 26.2 | lon_deg = 121.1 | mark = Lightgreen pog.svg | marksize = 10 }} }} | map_caption = }}
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.<ref name=FW>[https://paleobiodb.org/classic/displayCollResults?geological_group=Qujiang&formation=Liangtoutang Liangtoutang Formation] at Fossilworks.org</ref> The lithology primarily consists of red sandstone.
== Fossil content ==
{{paleobiota-key-compact}}
=== Dinosaurs ===
==== Ankylosaurs ==== {| class="wikitable" align="center" |- ! colspan="7" align="center" | Ankylosaurs of the Liangtoutang Formation |- ! Genus ! Species ! Location ! Stratigraphic position ! Material ! Notes ! Images |- | ''Jinyunpelta''<ref>{{Cite journal|author1=Wenjie Zheng |author2=Xingsheng Jin |author3=Yoichi Azuma |author4=Qiongying Wang |author5=Kazunori Miyata |author6=Xing Xu |year=2018 |title=The most basal ankylosaurine dinosaur from the Albian–Cenomanian of China, with implications for the evolution of the tail club |journal=Scientific Reports |volume=8 |issue=1 |article-number=3711 |doi=10.1038/s41598-018-21924-7 |pmid=29487376 |pmc=5829254 |bibcode=2018NatSR...8.3711Z }}</ref> | ''J. sinensis'' | | | "An almost complete skull" and two partial postcranial skeletons | A ankylosaurine ankylosaurind | |- |}
==== Ornithopods ==== {| class="wikitable" align="center" |- ! colspan="7" align="center" | Ornithopods of the Liangtoutang Formation |- ! Genus ! Species ! Location ! Stratigraphic position ! Material ! Notes ! Images |- | ''Yueosaurus''<ref>{{cite journal |last=Zheng |first=Wenjie |author2=Xingsheng Jin |author3=Masateru Shibata |author4=Yoichi Azuma |author5=Fangming Yu |name-list-style=amp |year=2012 |title=A new ornithischian dinosaur from the Cretaceous Liangtoutang Formation of Tiantai, Zhejiang Province, China |journal=Cretaceous Research |volume=34 |pages=208–219 |doi=10.1016/j.cretres.2011.11.001 |bibcode=2012CrRes..34..208Z }}</ref> | ''Y. tiantaiensis'' | | | "Partial postcranial skeleton" | A thescelosaurine thescelosaurid | |- |}
=== Eggs === {| class="wikitable" align="center" |- ! colspan="7" align="center" | Eggs of the Liangtoutang Formation |- ! Genus ! Species ! Location ! Stratigraphic position ! Material ! Notes ! Images |- | ''Macroelongatoolithus'' | ''M. xixiaensis'' | | | | | |- | ''Pachycorioolithus'' | ''P. jinyunensis'' | | | | | |- | ''Testudoolithus'' | ''T. jiangi'' | | | | | |- |}
== References == {{Reflist|3}}
=== Bibliography === * {{citation |last1=Zheng |first1=Wenjie |first2=Xingsheng |last2=Jin |first3=Yoichi |last3=Azuma |first4=Qiongying |last4=Wang |first5=Kazunori |last5=Miyata |first6=Xing |last6=Xu |year=2018 |title=The most basal ankylosaurine dinosaur from the Albian–Cenomanian of China, with implications for the evolution of the tail club |journal=Scientific Reports |volume=8 |issue=1 |article-number=3711 |doi=10.1038/s41598-018-21924-7|pmid=29487376 |bibcode=2018NatSR...8.3711Z |pmc=5829254 }} * {{citation |last1=Lawver |first1=D. R. |first2=X. |last2=Jin |first3=F. D. |last3=Jackson |first4=Q. |last4=Wang |year=2016 |title=An avian egg from the Lower Cretaceous (Albian) Liangtoutang Formation of Zhejiang Province, China |journal=Journal of Vertebrate Paleontology |volume=36 |issue=3 |pages=e1100631:1–7|doi=10.1080/02724634.2016.1100631 |bibcode=2016JVPal..36E0631L }} * {{citation |last1=Zheng |first1=Wenjie |first2=Xingsheng |last2=Jin |first3=Masateru |last3=Shibata |first4=Yoichi |last4=Azuma |first5=Fangming |last5=Yu |year=2012 |title=A new ornithischian dinosaur from the Cretaceous Liangtoutang Formation of Tiantai, Zhejiang Province, China |journal=Cretaceous Research |volume=34 |pages=208–219 |doi=10.1016/j.cretres.2011.11.001|bibcode=2012CrRes..34..208Z }} * {{citation |last1=Jin |first1=X. |first2=Y. |last2=Azuma |first3=F. D. |last3=Jackson |first4=D. J. |last4=Varricchio |year=2007 |title=Giant dinosaur eggs from the Tiantai basin, Zhejiang province, China |journal=Canadian Journal of Earth Sciences |volume=44 |issue=1 |pages=81–88|doi=10.1139/e06-077 |bibcode=2007CaJES..44...81J }}
Category:Geologic formations of China Category:Lower Cretaceous Series of Asia Category:Cretaceous China Category:Albian Stage Category:Cenomanian Stage Category:Sandstone formations Category:Lacustrine deposits Category:Ooliferous formations Category:Paleontology in Zhejiang