| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 874 | Soule, J.D. 1963 Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 18. Cyclostomata, Ctenostomata (Ectoprocta), and Entoprocta of the Gulf of California. American Museum Novitates (2144):1-34. | 1963 | Plagioecia tortuosa | 5 |
| 833 | Ruppert, E.E., R.S. Fox and R.D. Barnes 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. Brooks/Cole, Thomson Learning learning, Inc. 990 p. | 2004 | Plagioecia tortuosa | --> |