tubulinea tubulinea the tubulinea are a major grouping of amoebozoa, including most of the more familiar amoebae genera like amoeba, arcella, difflugia and hartmannella. tubulinea amoeba proteus scientific classification domain: eukaryota phylum: amoebozoa subphylum: lobosa class: tubulineasmirnov et al. 2005 subclasses & orders corycidia trichosida echinamoebia echinamoebida elardia leptomyxida euamoebida arcellinida characteristics during locomotion most tubulinea have a roughly cylindrical form or produce numerous cylindrical pseudopods. each cylinder advances by a single central stream of cytoplasm, granular in appearance, and has no subpseudopodia. this distinguishes them from other amoeboid groups, although in some members this is not the normal type of locomotion. classification this class was anticipated by some biologists such as jahn, who grouped all amoebae with granular pseudopodia together, but most split the lobose amoebae into testate testacealobosia and naked gymnamoebia. these latter are polyphyletic, but molecular trees by bolivar et al. identified a core monophyletic subgroup. subsequent studies showed the testate lobose amoebae belong to the same group, which was thus renamed lobosea sensu stricto or tubulinea. taxonomy class tubulinea smirnov et al. 2005 stat. nov. adl et al. 2018 subclass corycidia kang et al. 2017 stat. nov. adl et al. 2018 order trichosida moebius 1889 family trichosphaeriidae sheehan & banner 1973a family microcoryciidae de saedeleer 1934 subclass echinamoebia cavalier-smith 2016 stat. nov. adl et al. 2018 order echinamoebida cavalier-smith 2004 em. 2011 family vermamoebidae cavalier-smith & smirnov 2011 family echinamoebidae page 1975 subclass elardia kang et al. 2017 stat. nov. adl et al. 2018 superorder leptomyxia cavalier-smith 2016 order leptomyxida pussard & pons 1976 em. page 1987 family flabellulidae bovee & jahn, 1967 ex bovee 1970 family gephyramoebidae pussard & pons 1976 family leptomyxidae goodey 1915 superorder eulobosia cavalier-smith 2016 order euamoebida lepşi 1960 em. cavalier-smith 2016 family nolandellidae cavalier-smith 2011 family hartmannellidae singh 1951 em. smirnov et al. 2011 family amoebidae (ehrenberg 1838) page 1987 order arcellinida kent 1880 family bipseudostomatidae snegovaya & alekperov 2005 family mississippiellidae huddleston & haman 1985 family shamkiriidae snegovaya & alekperov 2005 suborder phryganellina bovee 1985 family phryganellidae jung 1942 family cryptodifflugiidae jung 1942 suborder organoconcha kosakyan et al. 2016 family microchlamyiidae ogden 1985 suborder glutinoconcha kosakyan et al. 2016 infraorder volnustoma kosakyan et al. 2016 family heleoperidae jung 1942 infraorder hyalospheniformis kosakyan et al. 2016 family hyalospheniidae jung, 1942 infraorder excentrostoma kosakyan et al. 2016 family centropyxidae family plagiopyxidae infraorder longithecina kosakyan et al. 2016 family lesquereusiidae family difflugiidae wallich 1864 infraorder sphaerothecina kosakyan et al. 2016 family cucurbitellidae gomaa et al. 2017 family distomatopyxidae bonnet 1970 family lamtopyxidae bonnet 1974 family netzeliidae kosakyan et al. 2016 family arcellidae ehrenberg 1832 family trigonopyxidae loeblich 1964 amoeba proteus chaos sp. arcella sp. test trichosphaerium sieboldi