Holotype CU COLO 12289, identified as
Gomphoneis frenguellii Kociolek & Sala in Kociolek, Uyua, Sala, Santinelli & Cefarelli, 2017
Holotype MLP LPC 13490, identified as
Gomphoneis patagoniana Kociolek & Sala in Kociolek, Uyua, Sala, Santinelli & Cefarelli, 2017