| 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 | Clavularia crassa | --> |
| 85338 | Vafidis, D. 2010 Checklist of class Anthozoa (Phylum Cnidaria). In Coll, M., et al., 2010. The biodiversity of the Mediterranean Sea: estimates, patterns, and threats. PLoS ONE 5(8):36pp. | 2010 | Clavularia crassa | --> |
| 120495 | Çinar, M.E., M.B. Yokes, S. Acik and A.K. Bakir 2014 Checklist of Cnidaria and Ctenophora from the coasts of Turkey. Turkish Journal of Zoology 38:677-697. | 2014 | Clavularia crassa | --> |
| 127697 |
IUCN 2022 The IUCN Red List of Threatened Species. Version 2022-1. |
2022 | Clavularia crassa | --> |
| 130435 | IUCN 2025 The IUCN Red List of Threatened Species. 1964 - onwards. https://www.iucnredlist.org/ | 2025 | Clavularia crassa | ver.2025-1 |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Clavularia crassa | --> |