Purkett Jr, C.A., 1961. Reproduction and early development of the paddlefish. Transactions of the American Fisheries Society, 90(2), pp.125-129.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Polyodon spathula | Egg | Egg adhesiveness | Adhesive | Adhesive |
| Polyodon spathula | Egg | Incubation time | 7 or less | 7.0 days |
| Polyodon spathula | Egg | Temperature for incubation | 18.3-21.1 | 19.7 °C |
| Polyodon spathula | Egg | Egg size after water-hardening | 2.70-4.00 | 3.35 mm |