| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 83435 | Rosenberg, G. 2009 Malacolog 4.1.1: A Database of Western Atlantic Marine Mollusca. [WWW database (version 4.1.1)] URL http://www.malacolog.org/. | 2009 | Placida verticilata | --> |
| 85339 | Templado, J. and R. Villanueva 2010 Checklist of Phylum Mollusca. pp. 148-198 In Coll, M., et al., 2010. The biodiversity of the Mediterranean Sea: estimates, patterns, and threats. PLoS ONE 5(8):36pp. | 2010 | Placida verticilata | 178 |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Placida verticilata | --> |