Lapierre, K. and Renaud, C.B., 2015. Fecundity of the lampreys Lampetra hubbsi and Eudontomyzon hellenicus. Environmental biology of fishes, 98(12), pp.2315-2320.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Lampetra hubbsi | Egg | Oocyte diameter | 0.96-1.10 | 1.03 mm |