Editing Triassic (section)

==Lagerstätten==
Two [[Early Triassic]] [[lagerstätten]] (high-quality fossil beds), the [[Dienerian]] aged [[Guiyang biota]]<ref>{{cite journal |last1=Dai |first1=Xu |last2=Davies |first2=Joshua H.F.L. |last3=Yuan |first3=Zhiwei |last4=Brayard |first4=Arnaud |last5=Ovtcharova |first5=Maria |last6=Xu |first6=Guanghui |last7=Liu |first7=Xiaokang |last8=Smith |first8=Christopher P.A. |last9=Schweitzer |first9=Carrie E. |last10=Li |first10=Mingtao |last11=Perrot |first11=Morgann G. |last12=Jiang |first12=Shouyi |last13=Miao |first13=Luyi |last14=Cao |first14=Yiran |last15=Yan |first15=Jia |last16=Bai |first16=Ruoyu |last17=Wang |first17=Fengyu |last18=Guo |first18=Wei |last19=Song |first19=Huyue |last20=Tian |first20=Li |last21=Dal Corso |first21=Jacopo |last22=Liu |first22=Yuting |last23=Chu |first23=Daoliang |last24=Song |first24=Haijun |year=2023 |title=A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem |journal=Science |volume=379 |issue=6632 |pages=567–572 |doi=10.1126/science.adf1622|pmid=36758082 |bibcode=2023Sci...379..567D |s2cid=256697946 |url=https://u-bourgogne.hal.science/hal-04016004 }}</ref> and the earliest [[Spathian]] aged [[Paris biota]]<ref>{{cite journal |last1=Brayard |first1=Arnaud |last2=Krumenacker |first2=L. J. |last3=Botting |first3=Joseph P. |last4=Jenks |first4=James F. |last5=Bylund |first5=Kevin G. |last6=Fara |first6=Emmanuel |last7=Vennin |first7=Emmanuelle |last8=Olivier |first8=Nicolas |last9=Goudemand |first9=Nicolas |last10=Saucède |first10=Thomas |last11=Charbonnier |first11=Sylvain |last12=Romano |first12=Carlo |last13=Doguzhaeva |first13=Larisa |last14=Thuy |first14=Ben |last15=Hautmann |first15=Michael |last16=Stephen |first16=Daniel A. |last17=Thomazo |first17=Christophe |last18=Escarguel |first18=Gilles |title=Unexpected Early Triassic marine ecosystem and the rise of the Modern evolutionary fauna |journal=Science Advances |year=2017 |volume=3 |issue=2 |pages=e1602159 |doi=10.1126/sciadv.1602159 |pmid=28246643 |pmc=5310825 |bibcode=2017SciA....3E2159B |doi-access=free }}</ref> stand out due to their exceptional preservation and [[biodiversity|diversity]]. They represent the earliest lagerstätten of the Mesozoic era and provide insight into the biotic recovery from the [[Permian-Triassic mass extinction]] event.

The [[Monte San Giorgio]] lagerstätte, now in the [[Lake Lugano]] region of northern [[Italy]] and southern [[Switzerland]], was in [[Middle Triassic]] times a [[lagoon]] behind reefs with an [[anoxic waters|anoxic]] bottom layer, so there were no scavengers and little turbulence to disturb fossilization, a situation that can be compared to the better-known Jurassic [[Solnhofen Limestone]] [[lagerstätte]]. The remains of fish and various marine reptiles (including the common [[pachypleurosaur]] ''[[Neusticosaurus]]'', and the bizarre long-necked [[archosauromorph]] ''[[Tanystropheus]]''), along with some terrestrial forms like ''[[Ticinosuchus]]'' and ''[[Macrocnemus]]'', have been recovered from this locality. All these fossils date from the [[Anisian]] and [[Ladinian]] [[age (geology)|ages]] (about 242 [[megaannum|Ma]] ago).