| In November 1964 he found a lampern, a relative of the blood-sucking lamprey. |
| Although it is apparently unknown in chondrosteans, it is believed to be homologous to lamprey velar muscles. |
| The river lamprey or lampern, Lampetra fluviatilis, is a smaller fish, and so is the Arctic lamprey, L. japonica. |
| One form is lamprey like, whereas the other is closer to the more primitive hagfish. |
| Rough fish comprise the American eel, black sucker, dogfish, gar, lamprey eel, redhorse, sheephead, and white sucker. |
| When the fossilized lamprey lived, there were probably many types of jawless vertebrates. |
