| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 3192 | Nielsen, C. 1989 Entoprocts. Synopses of the British Fauna (New Series),131 p. | 1989 | Urnatella gracilis | 120-121 |
| 1560 | Pachut, J. 1998 Checklist of recent Entoprocta. Laboratory page. http://www.geology.iupui.edu/research/PaleoLab/Projects/BryoLists/Entoproct.htm [Accessed 110706]. | 1998 | Urnatella gracilis | 31 |
| 19 | Bisby, F.A., M.A. Ruggiero, K.L. Wilson, M. Cachuela-Palacio, S.W. Kimani, Y.R. Roskov, A. Soulier-Perkins and J. van Hertum 2005 Species 2000 & ITIS Catalogue of Life: 2005 Annual Checklist. CD-ROM; Species 2000: Reading, U.K. | 2005 | Urnatella gracilis | --> |
| 3700 | Gollasch, S. and S. Nehring 2006 National checklist for aquatic alien species in Germany. Aquatic Invasions 1(4):245-269. | 2006 | Urnatella gracilis | 264 |