Corliss, John O. «Remarks on the Composition of the Large Ciliate Class Kinetofragmophora de Puytorac et al., 1974, and Recognition of Several New Taxa Therein, with Emphasis on the Primitive Order Primociliatida N. Ord». Journal of Eukaryotic Microbiolog, 21, 2, 5-1974. DOI: 10.1111/j.1550-7408.1974.tb03643.x.
Vd'ačný, Peter [et al]. «Phylogeny and Classification of the Litostomatea (Protista, Ciliophora), with Emphasis on Free-Living Taxa and the 18S rRNA Gene». Mol Phylogenet Evol., 59, 2, maig 2011, pàg. 510–22. DOI: 10.1016/j.ympev.2011.02.016. PMID: 21333743.
Gao, S [et al]. «Phylogeny of six genera of the subclass Haptoria (Ciliophora, Litostomatea) inferred from sequences of the gene coding for small subunit ribosomal RNA». Journal of Eukaryotic Microbiology, 55, 6, Nov-Dec 2008, pàg. 562-6. PMID: 19120803.
Vd'ačný, Peter [et al]. «Phylogeny and Classification of the Litostomatea (Protista, Ciliophora), with Emphasis on Free-Living Taxa and the 18S rRNA Gene». Mol Phylogenet Evol., 59, 2, maig 2011, pàg. 510–22. DOI: 10.1016/j.ympev.2011.02.016. PMID: 21333743.