| Leslie emended the diagnosis of Belodina compressa, and provided detailed descriptions and discussion. |
| Recognition of a separate gastroplitinid genus, Pseudogastroplites, is here maintained, but its diagnosis is emended. |
| A new genus, Ristedtoceras, is erected and the genus Pseudorthoceras Girty, 1911 is emended. |
| They emended the description of Behuninia as a conifer short shoot and added three new species, B. provoensis, B. bassii, and B. scottii. |
| In 1969, Rolfe correctly emended the spellings of the archaeostracan families by inserting id before the familial suffix. |
| The diagnosis is emended to include the internal nature of the processes, and the relationship of the processes to the vesicle interior. |
