Editing Triassic (section)

=== Fish ===
[[File:Birgeria recon.jpg|right|thumb|250px|''[[Birgeria]]'']]
In the wake of the [[end-Permian mass extinction|Permian-Triassic mass extinction event]], the [[fish]] fauna was remarkably uniform, with many [[family (biology)|families]] and [[genera]] exhibiting a [[cosmopolitan distribution]].<ref name=Romano2016>{{cite journal |last1=Romano |first1=Carlo |last2=Koot |first2=Martha B. |last3=Kogan |first3=Ilja |last4=Brayard |first4=Arnaud |last5=Minikh |first5=Alla V. |last6=Brinkmann |first6=Winand |last7=Bucher |first7=Hugo |last8=Kriwet |first8=Jürgen |title=Permian-Triassic Osteichthyes (bony fishes): diversity dynamics and body size evolution |journal=Biological Reviews |date=February 2016 |volume=91 |issue=1 |pages=106–47 |doi=10.1111/brv.12161 |pmid=25431138 |s2cid=5332637|url=https://hal.science/hal-01253154 }}</ref> [[Coelacanth]]s show their highest post-[[Devonian]] diversity in the [[Early Triassic]].<ref>{{cite journal |last1=Cavin |first1=Lionel |last2=Furrer |first2=Heinz |last3=Obrist |first3=Christian |year=2013 |title=New coelacanth material from the Middle Triassic of eastern Switzerland, and comments on the taxic diversity of actinistans |journal=Swiss Journal of Geoscience |volume=106 |issue=2 |pages=161–177 |doi=10.1007/s00015-013-0143-7 |doi-access=free}}</ref> [[Actinopterygians|Ray-finned fishes]] (actinopterygians) went through a remarkable diversification in the beginning of the Triassic, leading to peak diversity during the Middle Triassic; however, the pattern of this diversification is still not well understood due to a [[megabias|taphonomic megabias]].<ref>{{cite journal |last1=Romano |first1=Carlo |title=A hiatus obscures the early evolution of Modern lineages of bony fishes |journal=Frontiers in Earth Science |date=January 2021 |volume=8 |pages=618853 |doi=10.3389/feart.2020.618853 |doi-access=free}}</ref> The first [[stem-group]] [[teleost]]s appeared during the Triassic (teleosts are by far the most diverse group of fish today).<ref name=Romano2016/> Predatory actinopterygians such as [[Saurichthys|saurichthyids]] and [[Birgeria|birgeriids]], some of which grew over {{cvt|1.2|m|ft}} in length, appeared in the Early Triassic and became widespread and successful during the period as a whole.<ref name="Romano17">{{cite journal |last1=Romano |first1=Carlo |last2=Jenks |first2=James F. |last3=Jattiot |first3=Romain |last4=Scheyer |first4=Torsten M. |year=2017 |title=Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse |journal=Journal of Paleontology |volume=91 |issue=5 |pages=1–22 |doi=10.1017/jpa.2017.36 |bibcode=2017JPal...91.1025R |doi-access=free}}</ref> Lakes and rivers were populated by [[lungfish]] (Dipnoi), such as ''[[Ceratodus (genus)|Ceratodus]]'', which are mainly known from the dental plates, abundant in the fossils record.<ref>Agnolin, F. L., Mateus O., Milàn J., Marzola M., Wings O., Adolfssen J. S., & Clemmensen L. B. (2018).  Ceratodus tunuensis, sp. nov., a new lungfish (Sarcopterygii, Dipnoi) from the Upper Triassic of central East Greenland. Journal of Vertebrate PaleontologyJournal of Vertebrate Paleontology. e1439834</ref> [[Hybodonts]], a group of shark-like [[cartilaginous fish]], were dominant in both freshwater and marine environments throughout the Triassic.<ref>{{Cite journal |last1=Kumar |first1=Krishna |last2=Bajpai |first2=Sunil |last3=Pandey |first3=Pragya |last4=Ghosh |first4=Triparna |last5=Bhattacharya |first5=Debasish |date=2021-08-04 |title=Hybodont sharks from the Jurassic of Jaisalmer, western India |journal=Historical Biology |volume=34 |issue=6 |pages=953–963 |doi=10.1080/08912963.2021.1954920 |s2cid=238781606 |issn=0891-2963}}</ref> Last survivors of the mainly [[Palaeozoic]] [[Eugeneodontida]] are known from the Early Triassic.<ref>{{cite book |last1=Mutter |first1=Raoul J. |last2=Neuman |first2=Andrew G. |year=2008 |chapter=New eugeneodontid sharks from the Lower Triassic Sulphur Mountain Formation of Western Canada |title=Fishes and the Break-up of Pangaea  |url=https://doi.org/10.1144/SP295.3 |editor1=Cavin, L. |editor2=Longbottom, A. |editor3=Richter, M. |series=Geological Society of London, Special Publications |publisher=Geological Society of London |location=London |volume=295 |pages=9–41 |doi=10.1144/sp295.3|s2cid=130268582 }}</ref>