Acratia Delo, 1930 † (original description)
Acratia (Acratia) Delo, 1930 † (original description)
Acratia magna Delo, 1930 † (original description)
Acratia typica Delo, 1930 † (original description)
Argilloecia regularis Delo, 1930 † (original description)
Bairdia irionensis Delo, 1930 † (original description)
Bairdia pecosensis Delo, 1930 † (original description)
Bairdia seligi Delo, 1930 † (original description)
Cytherella constricta Delo, 1930 † (original description)
Glyptopleura emarginata Delo, 1930 † (original description)
Healdia ackersi Delo, 1930 † (original description)
Healdia concinna Delo, 1930 † (original description)
Healdia lentiformis Delo, 1930 † (original description)
Healdia obsolens Delo, 1930 † (original description)
Healdia subangularis Delo, 1930 † (original description)
Jonesina prolata Delo, 1930 † (original description)
Kellettella Delo, 1930 † (original description)
Kellettella naviculata Delo, 1930 † (original description)
Seminolites ovatus Delo, 1930 † (original description)