Alastega lira (FOSSIL) Cherns, 1998 † Sweden, Wialmsudd
Alastega martini (FOSSIL) Hoare & Pojeta Jr.,2006 † USA, Kentucky
Amblytochiton incomptus (FOSSIL) Hoare & Pojeta Jr.,2006 † USA, Kentucky, Jessamine
Thairoplax birhombivalvis (FOSSIL) (J.R.M. Bergenhayn,1955 †) Sweden, Wialmsudd
Thairoplax merriami (FOSSIL) Hoare, 2000 † USA, California, Siskiyou
Thairoplax pelta (FOSSIL) Cherns, 1998 † Sweden, Wialmsudd