Editing Jurassic (section)

==== Echinoderms ====
[[Crinoid]]s diversified throughout the Jurassic, reaching their peak Mesozoic diversity during the Late Jurassic, primarily due to the radiation of sessile forms belonging to the orders [[Cyrtocrinida]] and [[Millericrinida]].<ref>{{Cite journal|last1=Gorzelak|first1=Przemysław|last2=Salamon|first2=Mariusz A.|last3=Trzęsiok|first3=Dawid|last4=Lach|first4=Rafał|last5=Baumiller|first5=Tomasz K.|date=April 2016|title=Diversity dynamics of post-Palaeozoic crinoids – in quest of the factors affecting crinoid macroevolution|url=https://onlinelibrary.wiley.com/doi/10.1111/let.12141|journal=Lethaia|language=en|volume=49|issue=2|pages=231–244|doi=10.1111/let.12141|bibcode=2016Letha..49..231G }}</ref> [[Sea urchin|Echinoids]] (sea urchins) underwent substantial diversification beginning in the Early Jurassic, primarily driven by the radiation of irregular (asymmetrical) forms, which were adapting to deposit feeding. Rates of diversification sharply dropped during the Late Jurassic.<ref>{{Cite journal|last1=Hopkins|first1=Melanie J.|last2=Smith|first2=Andrew B.|date=2015-03-24|title=Dynamic evolutionary change in post-Paleozoic echinoids and the importance of scale when interpreting changes in rates of evolution|journal=Proceedings of the National Academy of Sciences|language=en|volume=112|issue=12|pages=3758–3763|doi=10.1073/pnas.1418153112|issn=0027-8424|pmc=4378421|pmid=25713369|bibcode=2015PNAS..112.3758H|doi-access=free}}</ref>