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Amphipoda
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===Fossil record=== Amphipods are thought to have originated in the [[Lower Carboniferous]]. Despite the group's age, however, the [[fossil record]] of the order Amphipoda is meagre, comprising specimens of one species from the [[Lower Cretaceous]] ([[Hauterivian]]) [[Weald Clay]] ([[United Kingdom]])<ref>{{Cite journal|author1=Edmund A. Jarzembowski |author2=Cédric Chény |author3=Yan Fang |author4=Bo Wang |year=2020 |title=First Mesozoic amphipod crustacean from the Lower Cretaceous of SE England |journal=Cretaceous Research |volume=112 |pages=Article 104429 |doi=10.1016/j.cretres.2020.104429 |bibcode=2020CrRes.11204429J |s2cid=213609157 |url=https://hal-insu.archives-ouvertes.fr/insu-02495739/document }}</ref> and 12 species dating back only as far as the [[Upper Eocene]], where they have been found in [[Baltic amber]].<ref>{{cite journal |title=A new terrestrial amphipod from tertiary amber deposits of Chiapas province, Southern Mexico |first1=E. L. |last1=Bousfield |first2=G. O. Jr. |last2=Poinar |doi=10.1080/10292389409380448 |journal=[[Historical Biology]] |volume=7 |issue=2 |year=1994 |pages=105–114|bibcode=1994HBio....7..105B }}</ref><ref>The species ''[[Rosagammarus]] minichiellus'' from the considerably older [[Late Triassic]] [[Luning Formation]] of Nevada was originally described as an amphipod, but subsequently reinterpreted as the right half of a [[Decapoda|decapod]] tail (Starr, Hegna & McMenamin 2015, ''The Geological Society of America North-Central Section 49th Annual Meeting'' [https://gsa.confex.com/gsa/2015NC/webprogram/Paper256121.html])</ref>
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