Obazoa

Obazoa (Brown et al., 2013)[1] is a proposed sister clade of Amoebozoa (which together form Amorphea). Obazoa is composed of Breviatea, Apusomonadida and Opisthokonta, and specifically excludes the Amoebozoa. The term Obazoa is based on the OBA acronym for Opisthokonta, Breviatea, and Apusomonadida.[1]

Obazoa
Temporal range: Late Stenian - Present, 1031.4–0 Ma
Scientific classification
(unranked): Unikonta
(unranked): Obazoa
Brown, 2013
Clades

Determining the placement of Breviatea and Apusomonadida and their properties is of interest for the development of the opisthokonts in which the main lineages of animals and fungi emerged.[1] The relationships among opisthokonts, breviates and apusomonads are not conclusively resolved (as of 2018), though Breviatea is usually inferred to be the most basal of the three lineages.[2][3][4][5][6] Ribosomal RNA phylogenies do not usually recover Obazoa as a clade (see for example:[7]), probably reflecting their stemming from a very ancient common ancestor, and little phylogenetic signal remains in datasets consisting of one or a few genes.

References
  1. Brown, Matthew W.; Sharpe, Susan C.; Silberman, Jeffrey D.; Heiss, Aaron A.; Lang, B. Franz; Simpson, Alastair G. B.; Roger, Andrew J. (2013-10-22). "Phylogenomics demonstrates that breviate flagellates are related to opisthokonts and apusomonads". Proceedings of the Royal Society of London B: Biological Sciences. 280 (1769): 20131755. doi:10.1098/rspb.2013.1755. ISSN 0962-8452. PMC 3768317. PMID 23986111.
  2. Eme, Laura; Sharpe, Susan C.; Brown, Matthew W.; Roger, Andrew J. (2014). "On the Age of Eukaryotes: Evaluating Evidence from Fossils and Molecular Clocks". Cold Spring Harbor Perspectives in Biology. 6 (8): a016139. doi:10.1101/cshperspect.a016139. ISSN 1943-0264. PMC 4107988. PMID 25085908.
  3. Ruggiero, Michael A.; Gordon, Dennis P.; Orrell, Thomas M.; Bailly, Nicolas; Bourgoin, Thierry; Brusca, Richard C.; Cavalier-Smith, Thomas; Guiry, Michael D.; Kirk, Paul M. (2015-06-11). "Correction: A Higher Level Classification of All Living Organisms". PLOS ONE. 10 (6): e0130114. Bibcode:2015PLoSO..1030114R. doi:10.1371/journal.pone.0130114. ISSN 1932-6203. PMC 5159126. PMID 26068874.
  4. Cavalier-Smith, Thomas; Fiore-Donno, Anna Maria; Chao, Ema; Kudryavtsev, Alexander; Berney, Cédric; Snell, Elizabeth A.; Lewis, Rhodri (2015-02-01). "Multigene phylogeny resolves deep branching of Amoebozoa". Molecular Phylogenetics and Evolution. 83: 293–304. doi:10.1016/j.ympev.2014.08.011. PMID 25150787.
  5. Cavalier-Smith T (2009). "Megaphylogeny, cell body plans, adaptive zones: causes and timing of eukaryote basal radiations". J. Eukaryot. Microbiol. 56 (1): 26–33. doi:10.1111/j.1550-7408.2008.00373.x. PMID 19340985.
  6. Brown, Matthew W; Heiss, Aaron A; Kamikawa, Ryoma; Inagaki, Yuji; Yabuki, Akinori; Tice, Alexander K; Shiratori, Takashi; Ishida, Ken-Ichiro; Hashimoto, Tetsuo (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.
  7. Orr, Russell J. S.; Zhao, Sen; Klaveness, Dag; Yabuki, Akinori; Ikeda, Keiji; Makoto, Watanabe M.; Shalchian-Tabrizi, Kamran (2017-10-08). "Enigmatic Diphyllatea eukaryotes: Culturing and targeted PacBio RS amplicon sequencing reveals a higher order taxonomic diversity and global distribution". bioRxiv 10.1101/199125.
  8. Phylogeny based on:
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