| সূত্র সংখ্যা | বর্ণনা | বৎসর | ব্যবহৃত নাম | পৃষ্ঠা |
|---|---|---|---|---|
| 874 | Soule, J.D. 1963 Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 18. Cyclostomata, Ctenostomata (Ectoprocta), and Entoprocta of the Gulf of California. American Museum Novitates (2144):1-34. | 1963 | Penetrantia densa | 22 |
| 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 | Penetrantia densa | --> |
| 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 | Penetrantia densa | --> |