| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 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 | Thecocodium quadratum | --> |
| 8278 | Bouillon, J., C. Gravili, F. Pagès, J.-M. Gili and F. Boero 2006 An introduction to Hydrozoa. Mémoires du Muséum national d'Histoire naturelle 194:1-591. | 2006 | Thecocodium quadratum | --> |
| 96235 | Garilao, N. 2014 Baltic Sea species list. Personal communication, 25 April 2014. Provided excel file. | 2014 | Thecocodium quadratum | --> |