Selected synonymic references
Codonella radix: Imhof, 1886
Tintinnopsis Davidoffii var. cylindrica: Daday, 1887b
Tintinnopsis radix: Brandt, 1906-1907; Kofoid and Campbell, 1929; Balech, 1945; Souto, 1970a
Tintinnopsis davidoffi var. cylindrica: Brandt, 1906-1907
Tintinnopsis fracta: Brandt, 1906-1907
Tintinnopsis cylindrica: Kofoid and Campbell, 1929