| author | date | title | journal / publication | Pedersen KJ, Pedersen LR | 1988 | Ultrastructural observations on the epidermis of Xenoturbella bocki Westblad, 1949; with a discussion of epidermal cytoplasmic filament systems of invertebrates. | Acta Zool (Stockh) 69:231-246 |
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| Xenoturbella bocki Westblad, 1949 | [with synonyms] | w | other research on this sp. |