Berger H. (1999) Monograph of the Oxytrichidae (Ciliophora, Hypotrichia). Monogr. Biol. 78: 1–1080
Berger H. (2003) Redefinition of Holosticha Wrzesniowski, 1877 (Ciliophora, Hypotricha). Eur. J. Protistol. 39: 373–379
Berger H. (2004) Uroleptopsis Kahl, 1932 (Ciliophora: Hypotricha): morphology and cell division of type species, redefinition, and phylogenetic relationships. Acta Protozool. 43: 99–121
Berger H. (2006) Monograph of the Urostyloidea (Ciliophora, Hypotricha). Monogr. Biol. 85: 1–1303
Berger H. (2008) Monograph of the Amphisiellidae and Trachelostylidae (Ciliophora, Hypotricha). Monogr. Biol. 88: 1–737
Berger H. (2011) Monograph of the Gonostomatidae and Kahliellidae (Ciliophora, Hypotricha). Monogr. Biol. 90: 1–741
Berger H., Foissner W. (1989) Morphology and biometry of some soil hypotrichs (Protozoa, Ciliophora) from Europe and Japan. Bull. Br. Mus. Nat. Hist. Zool. 55: 19–46
Borror A. C., Wicklow B. J. (1983) The suborder Urostylina Jankowski (Ciliophora, Hypotrichida): morphology, systematics and identification of species. Acta Protozool. 22: 97–126
Chen L., Wu W., El-Serehy H. A., Hu X., Clamp J. C. (2018) Morphology, morphogenesis, and phylogeny of an Anteholosticha intermedia (Ciliophora, Urostylida) population from the United States. Eur. J. Protistol. 65: 1–15
Deng Y., Lu X., Li J., Ba S., Paiva T. P. (2018) Morphology of two Eschaneustyla species (Ciliophora, Urostylida), with notes on morphogenesis of Eschaneustyla lugeri. Acta Protozool. 57: 69–78
Foissner W. (1982) Ökologie und Taxonomie der Hypotrichida (Protozoa: Ciliophora) einiger österreichischer Böden. Arch. Protistenk. 126: 19–143
Foissner W. (2014) An update of ‘basic light and scanning electron microscopic methods for taxonomic studies of ciliated protozoa’. Int. J. Syst. Evol. Microbiol. 64: 271–292
Foissner W. (2016) Terrestrial and semiterrestrial ciliates (Protozoa, Ciliophora) from Venezuela and Galápagos. Denisia 35: 1–912
Hu X., Fan X., Lin X., Gong J., Song W. (2009) The morphology and morphogenesis of a marine ciliate, Epiclintes auricularis rarisetus nov. spec. (Ciliophora, Epiclintidae), from the Yellow Sea. Eur. J. Protistol. 45: 281–291
Jung J., Berger H. (2019) Monographic treatment of Paraholosticha muscicola (Ciliophora, Keronopsidae), including morphological and molecular biological characterization of a brackish water population from Korea. Eur. J. Protistol. 68: 48–67
Jung J. H., Cho J., Jang Y. H., & Gil D. Y. (2018) Morphology and molecular phylogeny of Holostichides terrae nov. spec. (Ciliophora: Spirotrichea) with discussion on the possible nonmonophyly of Holostichides. Eur. J. Protistol, 62: 69–78
Kaur H., Negi S. R. K., Kamra K. (2019) Morphological and molecular characterization of Neogastrostyla aqua nov. gen., nov. spec. (Ciliophora, Hypotrichia) from River Yamuna, Delhi; comparison with Gastrostyla-like genera. Eur. J. Protistol. 68: 68–79
Kumar S., Kamar K., Sapra G. (2010) Ciliates of the Silent Valley National Park, India: Urostyloid Hypotrichs of the region with a note on the habitat. Acta Protozool. 49: 339–364
Kumar S., Bharti D., Kabir A. S., Hong J., Shin M. (2018) Rubrioxytricha guamensis nov. spec. (Ciliophora, Spirotricha), a novel hypotrich ciliate from Guam (United States), Micronesia. J. Eukaryot. Microbiol. 65: 392–399
Li J., Chen X., Xu K. (2016) Morphology and small subunit DNA phylogeny of two new marine urostylid ciliates, Caudiholosticha marina sp. nov. and Nothoholosticha flava sp. nov. (Ciliophora, Hypotrichia). J. Eukaryot. Microbiol. 63: 460–470
Li F., Lyu Z., Li Y., Fan X., Al-Farraj S. A., Shao C., Berger H. (2017) Morphology, morphogenesis, and molecular phylogeny of Uroleptus (Caudiholosticha) stueberi (Foissner, 1987) comb. nov. (Ciliophora, Hypotricha), and reclassification of the remaining Caudiholosticha species. Eur. J. Protistol. 59: 82–98
Luo X., Yan Y., Shao C., Al-Farraj S. A., Bourland W. A., Song W. (2018) Morphological, ontogenetic and molecular data support strongylidiids as being closely related to Dorsomarginalia (Protozoa, Ciliophora) and reactivation of the family Strongylidiidae Fauré-Fremiet, 1961. Zool. J. Linn. Soc. 184: 237–254
Luo X., Huang J. A., Li L., Song W., Bourland W. A. (2019) Phylogeny of the ciliate family Psilotrichidae (Protista, Ciliophora), a curious and poorly-known taxon, with notes on two algaebearing psilotrichids from Guam, USA. BMC Evol. Biol. 19:
Lyu Z., Shao C., Yi Z., Warren A. (2015) A molecular phylogenetic investigation of Bakuella, Anteholosticha, and Caudiholosticha (Protista, Ciliophora, Hypotrichia) based on three-gene sequences. J. Eukaryot. Microbiol. 62: 391–399
Lyu Z., Li J., Qi S., Yu Y., Shao C. (2018a) Morphology and morphogenesis of a new soil urostylid ciliate, Australothrix xianiensis nov. spec. (Ciliophora, Hypotrichia). Eur. J. Protistol. 64: 72–81
Lyu Z., Li J., Zhu E., Shao C. (2018b) Morphology and morphogenesis of a new soil urostylid ciliate, with the establishment of a new genus Caudiurostyla gen. nov. (Ciliophora, Hypotrichia). Eur. J. Protistol. 66: 166–176
Lyu Z., Wang J., Huang J., Warren A., Shao C. (2018c) Multigenebased phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family. Zool. Scr. 47: 243–254
Méndez-Sánchez D., Mayén-Estrada R., Luo X., Hu X. (2018) A new subspecies of Oxytricha granulifera (Hypotrichia: Oxytrichidae) from Mexico, with notes on its morphogenesis and phylogenetic position. J. Eukaryot. Microbiol. 65: 357–371
Moon J. H., Kim J. H., Quintela-Alonso P., Jung J. H. (2019). Morphology, morphogenesis, and molecular phylogeny of Neobakuella aenigmatica n. sp. (Ciliophora, Spirotrichea, Bakuellidae). J. Eukaryot. Microbiology. 67: 54–65
Pan X., Bourland W., Song W. (2013) Protargol synthesis: an inhouse protocol. J. Eukaryot. Microbiol. 60: 609–614
Shao C., Li L., Zhang Q., Song W., Berger H. (2014a) Molecular phylogeny and ontogeny of a new ciliate genus, Paracladotricha salina n. g., n. sp. (Ciliophora, Hypotrichia). J. Eukaryot. Microbiol. 61: 371–380
Shao C., Lv Z., Jin L., Warren A. (2014b) Morphogenesis of a unique pseudourostylid ciliate, Trichototaxis songi (Ciliophora, Urostylida). Eur. J. Protistol. 50: 68–77
Shao C., Hu C., Fan Y., Warren A., Lin X. (2019). Morphology, morphogenesis and molecular phylogeny of a freshwater ciliate, Monomicrocaryon euglenivorum euglenivorum (Ciliophora, Oxytrichidae). Eur. J. Protistol. 68: 25–36
Sheng Y., He M., Zhao F., Shao C., Miao M. (2018) Phylogenetic relationship analyses of complicated class Spirotrichea based on transcriptomes from three diverse microbial eukaryotes: Uroleptopsis citrina, Euplotes vannus and Protocruzia tuzeti. Mol. Phylogenet. Evol. 129: 338–345
Shin M. K., Kim W. (1993) Redescription of two holostichid species of genus Holosticha Wrzesniowski 1877 (Ciliophora, Hypotrichida, Holostichidae) from Seoul, Korea. Korean J. Syst. Zool. 1: 251–259
Song W. (1990) Morphologie und Morphogenese des bodenciliaten Periholosticha wilberti nov. spec. (Ciliophora, Hypotrichida). Arch. Protistenk. 138: 221–231
Song W., Shao C. (2017). Ontogenetic patterns of hypotrichs ciliates. Science Press. (in Chinese) 12: 1–497
Wilbert N. (1975) Eine verbesserte technik der Protargolimprägnation für ciliaten. Mikrokosmos. 64: 171–179
Zhang T., Qi H., Zhang T., Sheng Y., Warren A., Shao C. (2019) Morphology, morphogenesis and molecular phylogeny of a new brackish water subspecies, Neourostylopsis flava paraflava nov. subsp. (Ciliophora, Hypotrichia, Urostylidae), with redefinition of the genus Neourostylopsis. Eur. J. Protistol. 66: 48–62
Zhu E., Ba S., Lyu Z., Li J., Shao C. (2019) Morphogenesis and molecular phylogeny of the soil ciliate Holostichides chardezi (Ciliophora, Hypotrichia, Bakuellidae), with redefinition of Holostichides Foissner, 1987 and establishment of a new genus Anteholostichides. J. Eukaryot. Microbiol. 66: 730–739