CRuMs

CRuMs
	Collodictyon pseudopodoa
Scientific classification
Domain:	Eukaryota
Clade:	CRuMs; Brown et al. 2018
Subgroups
	Diphyllatea; Hilomonadea; Glissodiscea;
Synonyms
	Crumalia Zmitrovich, Perelygin & Zharikov 2022; Varisulca Cavalier-Smith 2013 emend. 2021;

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.^[4]^[1] A new CRuMs order Glissandrida was proposed in 2025 to place the yet unclassified genus Glissandra.^[5] It more or less supersedes Varisulca, as Ancyromonadida are inferred not to be specifically related to the orders Diphylleida / Collodictyonida, Rigifilida and Mantamonadida.

Phylogeny

Opimoda

Ancyromonadida Cavalier-Smith 1998 emend. Atkins 2000

Malawimonadea Cavalier-Smith 2003

Amorphea

Amoebozoa Lühe 1913 emend. Cavalier-Smith 1998

Obazoa

Breviatea Cavalier-Smith 2004

	Apusomonadida Karpov & Mylnikov 1989

	Opisthokonta (inc. fungi & animals)

CRuMs

Glissodiscea: Mantamonadida Cavalier-Smith 2004

	Hilomonadea: Rigifilida Karpov & Mylnikov 1989

	Diphyllatea: Diphylleida Cavalier-Smith 1993

References

^ ^a ^b Brown, Matthew W.; Heiss, Aaron A.; Kamikawa, Ryoma; Inagaki, Yuji; Yabuki, Akinori; Tice, Alexander K; Shiratori, Takashi; Ishida, Ken-Ichiro; Hashimoto, Tetsuo; Simpson, Alastair; Roger, Andrew (2018-01-19). "Phylogenomics Places Orphan Protistan Lineages in a Novel Eukaryotic Super-Group". Genome Biology and Evolution. 10 (2): 427–433. doi:10.1093/gbe/evy014. PMC 5793813. PMID 29360967.
^ Cavalier-Smith T (December 2021). "Ciliary transition zone evolution and the root of the eukaryote tree: implications for opisthokont origin and classification of kingdoms Protozoa, Plantae, and Fungi". Protoplasma. 259 (3): 487–593. doi:10.1007/s00709-021-01665-7. PMC 9010356. PMID 34940909.
^ Cavalier-Smith T (December 2021). "Ciliary transition zone evolution and the root of the eukaryote tree: implications for opisthokont origin and classification of kingdoms Protozoa, Plantae, and Fungi". Protoplasma. 259 (3): 487–593. doi:10.1007/s00709-021-01665-7. PMC 9010356. PMID 34940909.
^ Lax, Gordon; Eglit, Yana; Eme, Laura; Bertrand, Erin M.; Roger, Andrew J.; Simpson, Alastair G. B. (2018-11-14). "Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes". Nature. 564 (7736): 410–414. Bibcode:2018Natur.564..410L. doi:10.1038/s41586-018-0708-8. PMID 30429611. S2CID 205570993.
^ Yazaki, Euki; Harada, Ryo; Isogai, Ryu; Bamba, Kohei; Ishida, Ken-ichiro; Inagaki, Yuji; Shiratori, Takashi (20 February 2025). "Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs". bioRxiv 10.1101/2025.02.18.638917.

[Brown_2018-1] Brown, Matthew W.; Heiss, Aaron A.; Kamikawa, Ryoma; Inagaki, Yuji; Yabuki, Akinori; Tice, Alexander K; Shiratori, Takashi; Ishida, Ken-Ichiro; Hashimoto, Tetsuo; Simpson, Alastair; Roger, Andrew (2018-01-19). "Phylogenomics Places Orphan Protistan Lineages in a Novel Eukaryotic Super-Group". Genome Biology and Evolution. 10 (2): 427–433. doi:10.1093/gbe/evy014. PMC 5793813. PMID 29360967.

[2] Cavalier-Smith T (December 2021). "Ciliary transition zone evolution and the root of the eukaryote tree: implications for opisthokont origin and classification of kingdoms Protozoa, Plantae, and Fungi". Protoplasma. 259 (3): 487–593. doi:10.1007/s00709-021-01665-7. PMC 9010356. PMID 34940909.

[CavSmith_2021-3] Cavalier-Smith T (December 2021). "Ciliary transition zone evolution and the root of the eukaryote tree: implications for opisthokont origin and classification of kingdoms Protozoa, Plantae, and Fungi". Protoplasma. 259 (3): 487–593. doi:10.1007/s00709-021-01665-7. PMC 9010356. PMID 34940909.

[Lax_2018-4] Lax, Gordon; Eglit, Yana; Eme, Laura; Bertrand, Erin M.; Roger, Andrew J.; Simpson, Alastair G. B. (2018-11-14). "Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes". Nature. 564 (7736): 410–414. Bibcode:2018Natur.564..410L. doi:10.1038/s41586-018-0708-8. PMID 30429611. S2CID 205570993.

[Yazaki_2025-5] Yazaki, Euki; Harada, Ryo; Isogai, Ryu; Bamba, Kohei; Ishida, Ken-ichiro; Inagaki, Yuji; Shiratori, Takashi (20 February 2025). "Glissandra oviformis n. sp.: a novel predatory flagellate illuminates the character evolution within the eukaryotic clade CRuMs". bioRxiv 10.1101/2025.02.18.638917.

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