| Citation | Hiebert, T.C., 2015 Zirfaea pilsbryi. In: Oregon Estuarine Invertebrates: Rudys' Illustrated Guide to Common Species, 3rd ed. T.C. Hiebert, B.A. Butler and A.L. Shanks (eds.). University of Oregon Libraries and Oregon Institute of Marine Biology, Charleston, OR. |
| Ref. | 116636 Hiebert, T.C., 2015 |
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| Named Used as Valid | Penitella fitchi |
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