"Tintinnopsis" amphora Kofoid and Campbell, 1929
"Tintinnopsis" nucula (Fol, 1884)
See Genus Tintinnopsis (Tintinnopsis complex). Bowl amphora-like. Cytological studies are needed to confirm Tintinnopsis amphora Kofoid and Campbell and Tintinnopsis nucula (Fol) as valid species.
Ref.: Brandt (1906-1907), Barría de Cao (1981).