Sphingopyxis Takeuchi et al. 2001 emend. Hördt et al. 2020 Sphingopyxis Takeuchi et al. 2001 emend. Hördt et al. 2020 Sphingopyxis macrogoltabida (Takeuchi et al. 1993) Takeuchi et al. 2001 emend. Hördt et al. 2020 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Sphingomonadales Yabuuchi and Kosako 2006 emend. Hördt et al. 2020 Sphingomonadaceae Kosako et al. 2000 emend. Hördt et al. 2020 Sphingopyxis Takeuchi et al. 2001 emend. Hördt et al. 2020 Sphingomonadaceae Kosako et al. 2000 emend. Hördt et al. 2020 Zymomonas Kluyver and van Niel 1936 emend. Carr 1974 (Approved Lists 1980) Sphingobium Takeuchi et al. 2001 emend. Li et al. 2013 Sphingosinicella Maruyama et al. 2006 emend. Qiao et al. 2019 Sandaracinobacter Yurkov et al. 1997 emend. Lee et al. 2020 Erythromonas Yurkov et al. 1997 Novosphingobium Takeuchi et al. 2001 Sandarakinorhabdus Gich and Overmann 2006 emend. Cai et al. 2018 Rhizomonas van Bruggen et al. 1990 Blastomonas Sly and Cahill 1997 emend. Hiraishi et al. 2000 Sphingomonas Yabuuchi et al. 1990 emend. Feng et al. 2017 Sphingomicrobium Kämpfer et al. 2012 emend. Shahina et al. 2013 Parasphingopyxis Uchida et al. 2012 emend. Jeong et al. 2017 Sphingorhabdus Jogler et al. 2013 emend. Feng et al. 2020 Hephaestia Felföldi et al. 2014 Polymorphobacter Fukuda et al. 2014 emend. Jia et al. 2015 Parablastomonas Ren et al. 2015 Pacificamonas (sic) Liu et al. 2016 Pacificimonas corrig. Liu et al. 2016 Sphingoaurantiacus Kim et al. 2015 emend. Tan et al. 2016 Binariimonas Zhao et al. 2016 Rhizorhabdus Francis et al. 2014 emend. Kim et al. 2015 Stakelama Chen et al. 2010 Rhizorhapis Francis et al. 2014 Aquisediminimonas Jin et al. 2019 Chakrabartia Jani et al. 2019 Sphingosinithalassobacter Hetharua et al. 2019 Aestuariisphingobium Li et al. 2020 Allosphingosinicella Hördt et al. 2020 Elkelangia Hördt et al. 2020 Parasphingorhabdus Feng et al. 2020 Novosphingopyxis Feng et al. 2020 emend. Zhou et al. 2021 Chioneia Tahon et al. 2022 Sphingopyxis taejonensis (Lee et al. 2001) Pal et al. 2006 Sphingopyxis terrae (Takeuchi et al. 1993) Takeuchi et al. 2001 emend. Hördt et al. 2020 Sphingopyxis ginsengisoli Lee et al. 2008 Sphingopyxis ummariensis Sharma et al. 2010 emend. Hördt et al. 2020 Sphingopyxis panaciterrulae Srinivasan et al. 2010 Sphingopyxis granuli Kim et al. 2011 emend. Hördt et al. 2020 Sphingopyxis flava Verma et al. 2015 Sphingopyxis chilensis Godoy et al. 2003 Sphingopyxis baekryungensis Yoon et al. 2005 Sphingopyxis flavimaris Yoon and Oh 2005 Sphingopyxis macrogoltabida (Takeuchi et al. 1993) Takeuchi et al. 2001 emend. Hördt et al. 2020 Sphingopyxis litoris Kim et al. 2008 Sphingopyxis marina Kim et al. 2008 Sphingopyxis soli Choi et al. 2010 Sphingopyxis rigui Baik et al. 2013 Sphingopyxis bauzanensis Zhang et al. 2010 emend. Hördt et al. 2020 Sphingopyxis wooponensis Baik et al. 2013 Sphingopyxis italica Alias-Villegas et al. 2013 Sphingopyxis contaminans Subhash et al. 2014 Sphingopyxis fribergensis Oelschlägel et al. 2015 Sphingopyxis alaskensis (Vancanneyt et al. 2001) Godoy et al. 2003 Sphingopyxis witflariensis Kämpfer et al. 2002 emend. Hördt et al. 2020 Sphingopyxis panaciterrae Lee et al. 2011 Sphingopyxis indica Jindal et al. 2013 emend. Hördt et al. 2020 Sphingopyxis solisilvae Chaudhary et al. 2017 Sphingopyxis nepalensis Chaudhary and Kim 2018 Sphingopyxis lindanitolerans Kaminski et al. 2018 Choi J.-H. Kim M.-S. Jung M.-J. Roh S.W. Shin K.-S. Bae J.-W. Sphingopyxis soli sp. nov., isolated from landfill soil 2010 60 7 1682 1686 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.013128-0 19734286 Godoy F. Vancanneyt M. Martínez M. Steinbüchel A. Swings J. Rehm B.H.A. Sphingopyxis chilensis sp. nov., a chlorophenol-degrading bacterium that accumulates polyhydroxyalkanoate, and transfer of Sphingomonas alaskensis to Sphingopyxis alaskensis comb. nov. 2003 53 2 473 477 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02375-0 12710615 Srinivasan S. Kim M.K. Sathiyaraj G. Veena V. Mahalakshmi M. Kalaiselvi S. Kim Y.-J. Yang D.-C. Sphingopyxis panaciterrulae sp. nov., isolated from soil of a ginseng field 2010 60 10 2358 2363 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.019414-0 19933588 Kämpfer P. Witzenberger R. Denner E.B.M. Busse H.J. Neef A. Sphingopyxis witflariensis sp. nov., isolated from activated sludge. 2002 52 6 2029 2034 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02217-0 12508864 Alias-Villegas C. Jurado V. Laiz L. Saiz-Jimenez C. Sphingopyxis italica sp. nov., isolated from Roman catacombs 2013 63 7 2565 2569 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.046573-0 23264504 Jindal S. Dua A. Lal R. 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Sphingopyxis contaminans sp. nov., isolated from a contaminated Petri dish 2014 64 7 2238 2243 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.061937-0 24711587 Kim B.S. Lim Y.W. Chun J. Sphingopyxis marina sp. nov. and Sphingopyxis litoris sp. nov., isolated from seawater. 2008 58 10 2415 2419 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.65614-0 18842866 Lee M. Ten L.N. Lee H.W. Oh H.W. Im W.T. Lee S.T. Sphingopyxis ginsengisoli sp. nov., isolated from soil of a ginseng field in South Korea. 2008 58 10 2342 2347 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64431-0 18842853 Sharma P. Verma M. Bala K. Nigam A. Lal R. Sphingopyxis ummariensis sp. nov., isolated from a hexachlorocyclohexane dump site 2010 60 4 780 784 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.008805-0 19656938 Chaudhary D.K. Kim J. Sphingopyxis nepalensis sp. nov., isolated from oil-contaminated soil. 2018 68 1 364 370 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.002514 29205125 Yoon J.H. Lee C.H. Yeo S.H. Oh T.K. Sphingopyxis baekryungensis sp. nov., an orange-pigmented bacterium isolated from sea water of the Yellow Sea in Korea 2005 55 3 1223 1227 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63495-0 15879259 Pal R. Bhasin V.K. Lal R. Proposal to reclassify [Sphingomonas] xenophaga Stolz et al. 2000 and [Sphingomonas] taejonensis Lee et al. 2001 as Sphingobium xenophagum comb. nov. and Sphingopyxis taejonensis comb. nov., respectively. 2006 56 3 667 670 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64161-0 16514047 Verma H. Rani P. Singh A.K. Kumar R. Dwivedi V. Negi V. Lal R. Sphingopyxis flava sp. nov., isolated from a hexachlorocyclohexane (HCH)-contaminated soil 2015 65 10 3720 3726 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.000482 26219279 Kim M.K. Im W.-T. Ohta H. Lee M. Lee S.-T. Sphingopyxis granuli sp. nov., a β-glucosidase-producing bacterium in the family Sphingomonadaceae in α-4 subclass of the Proteobacteria 2005 43 152 157 Journal of Microbiology (Seoul, Korea) J Microbiol 1225-8873 1976-3794 15880090 Lee H.-W. Ten I.L. Jung H.-M. Liu Q.-M. Im W.-T. Lee S.-T. Sphingopyxis panaciterrae sp. nov., isolated from soil from ginseng field 2008 18 6 1011 1015 Journal of Microbiology and Biotechnology J Microbiol Biotechnol 1017-7825 1738-8872 18600040 Baik K.S. Choe H.N. Park S.C. Hwang Y.M. Kim E.M. Park C. Seong C.N. Sphingopyxis rigui sp. nov. and Sphingopyxis wooponensis sp. nov., isolated from wetland freshwater, and emended description of the genus Sphingopyxis 2013 63 4 1297 1303 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.044057-0 22798653 Yabuuchi E. Kosako Y. Fujiwara N. Naka T. Matsunaga I. Ogura H. Kobayashi K. Emendation of the genus Sphingomonas Yabuuchi et al. 1990 and junior objective synonymy of the species of three genera, Sphingobium, Novosphingobium and Sphingopyxis, in conjunction with Blastomonas ursincola. 2002 52 5 1485 1496 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/00207713-52-5-1485 12361250 Yoon J.H. Oh T.K. Sphingopyxis flavimaris sp. nov., isolated from sea water of the Yellow Sea in Korea 2005 55 1 369 373 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63218-0 15653902 Oelschlägel M. Rückert C. Kalinowski J. Schmidt G. Schlömann M. Tischler D. Description of Sphingopyxis fribergensis sp. nov. - a soil bacterium with the ability to degrade styrene and phenylacetic acid 2015 65 9 3008 3015 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.000371 26040579 Takeuchi M. Hamana K. Hiraishi A. Proposal of the genus Sphingomonas sensu stricto and three new genera, Sphingobium, Novosphingobium and Sphingopyxis, on the basis of phylogenetic and chemotaxonomic analyses. 2001 51 4 1405 1417 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/00207713-51-4-1405 11491340 Zhang D.-C. Liu H.-C. Xin Y.-H. Zhou Y.-G. Schinner F. Margesin R. Sphingopyxis bauzanensis sp. nov., a psychrophilic bacterium isolated from soil 2010 60 11 2618 2622 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.018218-0 20023054 Baik K.S. Choe H.N. Park S.C. Hwang Y.M. Kim E.M. Park C. Seong C.N. Sphingopyxis rigui sp. nov. and Sphingopyxis wooponensis sp. nov., isolated from wetland freshwater, and emended description of the genus Sphingopyxis 2013 63 4 1297 1303 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.044057-0 22798653 Hördt A. García-López M. Meier-Kolthoff J.P. Tindall B.J. Weinhold L.-M. Gronow S. Kyrpides N. Woyke T. Schleuning M. Göker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria 2020 11 468 Frontiers in Microbiology Front. Microbio. 1664-302X 10.3389/fmicb.2020.00468 32373076 Takeuchi M. Hamana K. Hiraishi A. Proposal of the genus Sphingomonas sensu stricto and three new genera, Sphingobium, Novosphingobium and Sphingopyxis, on the basis of phylogenetic and chemotaxonomic analyses. 2001 51 4 1405 1417 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/00207713-51-4-1405 11491340 TODO (garrity): RFO Yabuuchi asserted Sphingopyxis as a junior objective synonym of Sphingomonas based on phylogeny and chemotaxonomy. However, since Sphingopyxis was based on a non-type species of Sphingomonas, this assertion is invalid and it could only be a heterotypic synonym. I recorded it as such, and marked it ignore for now.