Reyes, R.C., 2008. Embryogenesis and ammocoete morphological development of the Pacific lamprey (Entosphenus tridentatus Gairdner, 1836) from the American River, California. US Department of the Interior, Bureau of Reclamation.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Entosphenus tridentatus | Egg | Degree-days for incubation | 15; 19 | 285.0 °C * day |