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=== Gilled lobopodians === [[File:20210730 Gilled lobopodians Pambdelurion Kerygmachela.png|thumb|The gilled lobopodians ''[[Pambdelurion]]'' (top left) and ''[[Kerygmachela]]'' (bottom right).]] [[dinocaridida|Dinocaridids]] with lobopodian affinities (due to shared features like annulation and lobopods) are referred to as "gilled lobopodians"<ref name=":8" /><ref name=":7" /><ref name=":29" /> or "gilled lobopods".<ref name=":18" /> These forms sport a pair of flaps on each trunk segment, but otherwise no signs of arthropodization, in contrast to more derived dinocaridids like the [[Radiodonta]] that have robust and sclerotized frontal appendages. Gilled lobopodians cover at least four genera: ''[[Pambdelurion]]'', ''[[Kerygmachela]]'', ''[[Utahnax]]'' and ''[[Mobulavermis]]''.<ref name=":13" /><ref>{{Cite journal |last=McCall |first=C. R. A. |year=2023 |title=A large pelagic lobopodian from the Cambrian Pioche Shale of Nevada |journal=Journal of Paleontology |volume=97 |issue=5 |pages=1009β1024 |doi=10.1017/jpa.2023.63|bibcode=2023JPal...97.1009M }}</ref> ''[[Opabinia]]'' may also fall under this category in a broader sense,<ref name=":8">{{Cite journal|last=Ortega-HernΓ‘ndez|first=Javier|date=December 2014|title=Making sense of 'lower' and 'upper' stem-group Euarthropoda, with comments on the strict use of the name Arthropoda von Siebold, 1848|journal=Biological Reviews of the Cambridge Philosophical Society|volume=91|issue=1|pages=255β273|doi=10.1111/brv.12168|issn=1469-185X|pmid=25528950|s2cid=7751936}}</ref><ref name=":17">{{Cite journal|last1=Van Roy|first1=Peter|last2=Daley|first2=Allison C.|last3=Briggs|first3=Derek E. G.|date=2015|title=Anomalocaridid trunk limb homology revealed by a giant filter-feeder with paired flaps|journal=Nature|language=en|volume=522|issue=7554|pages=77β80|doi=10.1038/nature14256|pmid=25762145|issn=1476-4687|bibcode=2015Natur.522...77V|s2cid=205242881}}</ref> although the presence of lobopods in this genus is not definitively proven.<ref>{{Cite journal|last1=Budd|first1=Graham E.|last2=Daley|first2=Allison C.|date=January 2012|title=The lobes and lobopods of Opabinia regalis from the middle Cambrian Burgess Shale: The lobes of Opabinia|url=https://www.academia.edu/483085|journal=Lethaia|language=en|volume=45|issue=1|pages=83β95|doi=10.1111/j.1502-3931.2011.00264.x}}</ref> ''[[Omnidens]]'', a genus known only from ''Pambdelurion''-like mouthparts and distal parts of the frontal appendages, may also be a gilled lobopodian.<ref name=":7" /><ref name="qiongqii">{{cite journal |last1=Li |first1=Wei |last2=Yang |first2=Jie |last3=Yang |first3=Xiaoyu |last4=Dhungana |first4=Alavya |last5=Wang |first5=Yu |last6=Zhang |first6=Xiguang |last7=Smith |first7=Martin R. |date=November 2024 |title=Omnidens appendages and the origin of radiodont mouthparts |url=https://onlinelibrary.wiley.com/doi/10.1002/spp2.1600 |journal=Papers in Palaeontology |language=en |volume=10 |issue=6 |doi=10.1002/spp2.1600 |bibcode=2024PPal...10E1600L |issn=2056-2799}}</ref> The body flaps may have functioned as both swimming appendages and gills,<ref name=":18" /> and are possibly homologous to the dorsal flaps of radiodonts and exites of [[euarthropods|Euarthropoda]].<ref name=":1" /><ref name=":17" /> Whether these genera were true lobopodians is still contested by some.<ref>{{Cite journal|last1=Chen|first1=J.-y|last2=Ramskold|first2=L.|last3=Zhou|first3=G.-q|title=Evidence for Monophyly and Arthropod Affinity of Cambrian Giant Predators|url=https://www.academia.edu/1781228|journal=Science|language=en|volume=264|issue=5163|pages=1304β1308|issn=0036-8075|doi=10.1126/science.264.5163.1304|bibcode=1994Sci...264.1304C|year=1994|pmid=17780848|s2cid=1913482}}</ref> However, they are widely accepted as stem-group [[arthropod]]s just basal to radiodonts.<ref name=":8" /><ref name="ReferenceA" /><ref name=":2" /><ref name=":10" /> {{Clear}}
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