Warren, A. 2009. Codonellopsis orthoceras (Haeckel, 1873) Jörgensen, 1924. In: Warren, A. (2017). World Ciliophora Database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=417162 on 2015-12-18.