Yamazaki, Y., Fukutomi, N., Takeda, K. and Iwata, A., 2003. Embryonic development of the Pacific lamprey, Entosphenus tridentatus. Zoological science, 20(9), pp.1095-1098.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Entosphenus tridentatus | Egg | Egg size after water-hardening | 1.148-1.384 | 1.27 mm |
| Entosphenus tridentatus | Egg | Egg size after water-hardening | 1.249 | 1.25 mm |
| Entosphenus tridentatus | Egg | Egg size after water-hardening | 1.037-1.274 | 1.16 mm |
| Entosphenus tridentatus | Egg | Egg size after water-hardening | 1.145 | 1.15 mm |
| Entosphenus tridentatus | Egg | Degree-days for incubation | 18; 11 | 198.0 °C * day |
| Entosphenus tridentatus | Egg | Degree-days for incubation | 15; 19 | 285.0 °C * day |
| Entosphenus tridentatus | Larvae | Onset of exogeneous feeding | 32 days 18 C | 32.0 °C * day |