Ageneracrinus Sutton & Winkler, 1940 † (original description)
Alsataspis Turner, 1940 † (original description)
Anevda Palmer, 1940 † (original description)
Avonaspis Lochman, 1940 † (original description)
Blastocerina Flower, 1940 † (original description)
Brassicicephalus Lochman, 1940 † (original description)
Caenagnathus Sternberg, 1940 † accepted as Chirostenotes Gilmore, 1924 † (original description)
Cedarina Lochman, 1940 † (original description)
Eumorphocystis Branson & Peck, 1940 † (original description)
Guembelitriella Tappan, 1940 † (original description)
Gümbelitriella Tappan, 1940 † accepted as Guembelitriella Tappan, 1940 † (original description)
Hunanites Chao, 1940 † (original description)
Intermediacrinus Sutton & Winkler, 1940 † (original description)
Kinsabia Lochman, 1940 † (original description)
Lebetocrinus Kirk, 1940 † (original description)
Maratia Kay, 1940 † (original description)
Metarmenoceras Flower, 1940 † (original description)
Norwoodina Lochman, 1940 † (original description)
Opikatia Kay, 1940 † accepted as Oepikatia Kay, 1940 † (original description)
Pandorina Stauffer, 1940 † accepted as Pandorinellina Hass, 1959 † (original description)
Parenthatia Kay, 1940 † (original description)
Pentaramicrinus Sutton & Winkler, 1940 † (original description)
Procymus Usinger, 1940 † (original description)
Saccalatia Kay, 1940 † (original description)
Samanoetia Macneil, 1940 † (original description)
Seeleyosaurus White, 1940 † (original description)
Tremamesacleis White, 1940 † (original description)
Winchellatia Kay, 1940 † (original description)