| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 1991 | Hooge, M.D. and S. Tyler 2001 Interstitial acoels (Platyhelminthes: Acoela) from Bermuda. Proc. Biol. Soc. Wash., 114(2):414-426. | 2001 | Parahaploposthia velvetum | --> |
| 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 | Parahaploposthia velvetum | --> |