Crassimarginata crassicosta (FOSSIL) Jhaveri, 1969 † Italy, Friuli-Venezia Giulia, Udine
Crassimarginata incerta (FOSSIL) (Spitz, 1907 †) Austria, Kärnten, Hermagor
Crassimarginata tenuicosta (FOSSIL) Jhaveri, 1969 † Italy, Friuli-Venezia Giulia, Udine
Yukonoconcha pedderi (FOSSIL) Frýda & al., 2002 † Canada, Yukon