Anditrigonia (Anditrigonia) eximia tesselicaudata H. A. Leanza, 1993 † accepted as Damborenella tesselicaudata (H. A. Leanza, 1993) † (original description)
Andivaugonia H. A. Leanza, 1993 † (original description)
Buchotrigoniidae H. A. Leanza, 1993 † (original description)
Frenguelliella perezreyesi H. A. Leanza, 1993 † (original description)
Frenguelliella poultoni H. A. Leanza, 1993 † accepted as Frenguelliella chubutensis (Feruglio, 1934) † (original description)
Groeberella H. A. Leanza, 1993 † (original description)
Lambertrigonia H. A. Leanza, 1993 † (original description)
Myophorella (Haidaia) elguetai H. A. Leanza, 1993 † (original description)
Myophorella (Myophorella) schulzi H. A. Leanza, 1993 † (original description)
Pterotrigonia (Notoscabrotrigonia) coheni H. A. Leanza, 1993 † accepted as Notoscabrotrigonia coheni H. A. Leanza, 1993 † (original description)
Rutitrigonia kauffmanni H. A. Leanza, 1993 † (original description)
Scaphorella camachoi H. A. Leanza, 1993 † (original description)
Syrotrigonia brocardoi H. A. Leanza, 1993 † accepted as Allemanella brocardoi (H. A. Leanza, 1993) † accepted as Allemanella sigeli (H. A. Leanza & Garate Zubillaga, 1987) † (original description)
Trigonia levyi H. A. Leanza, 1993 † (original description)
Trigonia losadai H. A. Leanza, 1993 † (original description)