Editing Lobopodia (section)

=== ''Siberion'' and similar taxa ===
{{further|Siberiidae}}[[File:20191217 Siberiida Siberion Megadictyon Jianshanopodia.png|thumb|The siberiid lobopodians ''[[Siberion]]'' (upper left), ''[[Megadictyon]]'' (bottom center) and ''[[Jianshanopodia]]'' (upper right).]]

''[[Siberion]]'', ''[[Megadictyon]]'' and ''[[Jianshanopodia]]'' may be grouped as siberiids (order [[Siberiida]]),<ref name=":9">{{Cite journal |last=Dzik |first=Jerzy |date=2011-07-01 |df=dmy-all |title=The xenusian-to-anomalocaridid transition within the lobopodians |url=http://paleoitalia.org/media/u/archives/7.Dzik_-_BollSPI_50-1.pdf |archive-url=https://web.archive.org/web/20170808022647/http://paleoitalia.org/media/u/archives/7.Dzik_-_BollSPI_50-1.pdf |archive-date=2017-08-08 |url-status=usurped |journal=Bollettino della Societa Paleontologica Italiana |volume=50 |pages=65–74}}</ref> jianshanopodians<ref name="ReferenceA" /> or "giant lobopodians"<ref>{{Cite journal|last=Edgecombe|first=Gregory D.|date=2020-11-02|title=Arthropod Origins: Integrating Paleontological and Molecular Evidence|url=https://www.annualreviews.org/doi/10.1146/annurev-ecolsys-011720-124437|journal=Annual Review of Ecology, Evolution, and Systematics|volume=51|issue=1|pages=1–25|doi=10.1146/annurev-ecolsys-011720-124437|s2cid=225478171|issn=1543-592X}}</ref> by some literatures. They are generally large — body length ranging from {{cvt|7|to|22|cm|sigfig=1}}<ref name=":9"/><ref name="Liu2007"/>  — xenusiid lobopodians with widen trunk, stout trunk lobopods without evidence of claws, and most notably a pair of robust frontal appendages.<ref name=":8"/> With the possible exception of ''Siberion'',<ref name=":9" /><ref name="ReferenceA" /> they also have digestive glands like those of a gilled lobopodian and basal euarthropod.<ref name="Liu2006" /><ref name="Liu2007" /><ref name=":8"/><ref name=":5"/> Their anatomy represent transitional forms between typical xenusiids and gilled lobopodians,<ref name=":9"/> eventually placing them under the basalmost position of arthropod stem-group.<ref name="Liu2006"/><ref name="Liu2007"/><ref name=":8"/><ref name=":10"/>
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