CRuMs

{{Short description|Clade of protists}}

{{Automatic taxobox

| image = Collodictyon pseudopodoa (extracted).jpg

| image_caption = Collodictyon pseudopodoa

| taxon = CRuMs

| authority = Brown et al. 2018

| subdivision_ranks = Subgroups

| subdivision = *Diphyllatea

• Hilomonadea
• Glissodiscea

| synonyms = *Crumalia {{au|Zmitrovich, Perelygin & Zharikov 2022}}{{cite journal|vauthors=Cavalier-Smith T|title=Ciliary transition zone evolution and the root of the eukaryote tree: implications for opisthokont origin and classification of kingdoms Protozoa, Plantae, and Fungi|journal=Protoplasma|doi=10.1007/s00709-021-01665-7|date=December 2021|volume=259|issue=3 |pages=487–593|pmid=34940909 |pmc=9010356}}

• Varisulca {{au|Cavalier-Smith 2013 emend. 2021}}{{cite journal|vauthors=Cavalier-Smith T|title=Ciliary transition zone evolution and the root of the eukaryote tree: implications for opisthokont origin and classification of kingdoms Protozoa, Plantae, and Fungi|journal=Protoplasma|doi=10.1007/s00709-021-01665-7|date=December 2021|volume=259|issue=3 |pages=487–593|pmid=34940909 |pmc=9010356}}

}}

CRuMs is a clade of microbial eukaryotes, whose name is an acronym of the following constituent groups: i) Collodictyonids also known as diphylleids, ii) rigifilids and iii) mantamonads as sister of the Amorphea.{{Cite journal |last1=Lax |first1=Gordon |last2=Eglit |first2=Yana |last3=Eme |first3=Laura |last4=Bertrand |first4=Erin M.|last5=Roger |first5=Andrew J. |last6=Simpson |first6=Alastair G. B. |date=2018-11-14 |title=Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes |journal=Nature |volume=564|issue=7736 |pages=410–414 |doi=10.1038/s41586-018-0708-8|pmid=30429611 |bibcode=2018Natur.564..410L |s2cid=205570993 }}{{Cite journal |last1=Brown |first1=Matthew W. |last2=Heiss |first2=Aaron A. |last3=Kamikawa |first3=Ryoma |last4=Inagaki |first4=Yuji |last5=Yabuki |first5=Akinori |last6=Tice |first6=Alexander K|last7=Shiratori |first7=Takashi |last8=Ishida |first8=Ken-Ichiro |last9=Hashimoto |first9=Tetsuo |last10=Simpson |first10=Alastair |last11=Roger |first11=Andrew |date=2018-01-19 |title=Phylogenomics Places Orphan Protistan Lineages in a Novel Eukaryotic Super-Group|journal=Genome Biology and Evolution |volume=10 |issue=2 |pages=427–433 |doi=10.1093/gbe/evy014 |pmc=5793813|pmid=29360967}} A new CRuMs order Glissandrida was proposed in 2025 to place the yet unclassified genus Glissandra.{{Cite biorxiv |last1=Yazaki |first1=Euki |last2=Harada |first2=Ryo |last3=Isogai |first3=Ryu |last4=Bamba |first4=Kohei |last5=Ishida |first5=Ken-ichiro |last6=Inagaki |first6=Yuji |last7=Shiratori |first7=Takashi |title=Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs |date=20 February 2025 |biorxiv=10.1101/2025.02.18.638917}} It more or less supersedes Varisulca, as Ancyromonadida are inferred not to be specifically related to the orders Diphylleida / Collodictyonida, Rigifilida and Mantamonadida.