Lamellipedia
{{Taxobox
| name = Lamellipedia
| regnum = Animalia
| phylum = Arthropoda
| fossil_range = {{fossilrange|Early Cambrian|Late Permian}}
| unranked_classis = Lamellipedia
| unranked_classis_authority = Hou and Bergstrom, 1997{{Citation |last1=Hou |first1=X. |title=Arthropods of the Lower Cambrian Chengjiang fauna, southwest China |url=https://foreninger.uio.no/ngf/FOS/pdfs/F&S_45.pdf |number=45 |pages=1–116 |year=1997 |series=Fossils & Strata |publisher=Scandinavian University Press |issn=2637-6032 |last2=Bergström |first2=J.}}
| subdivision_ranks = Subgroups
| subdivision = *Artiopoda
}}
Lamellipedia is a proposed clade of arthropods, including trilobites and their relatives (Artiopoda) and Marrellomorpha. This relationship is not consistently recovered in phylogenetic analyses.{{Cite journal |last=Stein |first=Martin |date=November 2013 |title=Cephalic and appendage morphology of the Cambrian arthropod Sidneyia inexpectans |url=https://linkinghub.elsevier.com/retrieve/pii/S0044523113000375 |journal=Zoologischer Anzeiger - A Journal of Comparative Zoology |language=en |volume=253 |issue=2 |pages=164–178 |doi=10.1016/j.jcz.2013.05.001|url-access=subscription }}