| As shown by Fryda and Blodgett, the shell characters of Alaskacirrus fit well with the diagnosis of the family Cirridae Cossmann, 1916, as emended by Bandel. |
| A new genus, Ristedtoceras, is erected and the genus Pseudorthoceras Girty, 1911 is emended. |
| Recognition of a separate gastroplitinid genus, Pseudogastroplites, is here maintained, but its diagnosis is emended. |
| It is clear, however, that Mamet and Pinard's diagnosis of the protonodosariid wall as a microgranular tectum must be emended. |
| Leslie emended the diagnosis of Belodina compressa, and provided detailed descriptions and discussion. |
| Among all the functions related to the septal marginal fluting, the one suggested by Spath is emended and elaborated herein as the most reasonable one. |
