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References
- 1 2 3 4 von Salvini-Plawen, L. (1986). Systematic notes on Spadella and on the Chaetognatha in general. Zeitschrift für Zoologische Systematik und Evolutionsforschung, 24(2), 122–128.
- 1 2 Bowman, T. & Bieri, R. (1989). Paraspadella anops, new species, from Sagittarius Cave, Grand Bahama Island, the second troglobitic chaetognath. Proceedings of the Biological Society of Washington, 102(3), 586–589.
- ↑ Tokioka, T. (1965). The taxonomical outline of Chaetognatha. Publications of the Seto Marine Biological Laboratory, 12(5), 335–357.
- ↑ Casanova, J. (1990). A new species of Paraspadella (Chaetognatha) from the coastal waters of Japan. Proceedings of the Biological Society of Washington, 103(4), 907–912.
- 1 2 Mawson, P. M. (1944). Some species of the chaetognath genus Spadella from New South Wales. Transactions of the Royal Society of South Australia, 68, 327–333.
- ↑ Alvariño, A. (1981). Spadella legazpichessi, a new benthic chaetognath from Enewetak, Marshall Islands. Proceedings of the Biological Society of Washington, 94, 107–121.
- 1 2 Owre, H. B. (1963). The genus Spadella (Chaetognatha) in the western North Atlantic Ocean with descriptions of two new species. Bulletin of Marine Science, 13, 378–390.
- ↑ Alvariño, A. (1987). Spadella pimukatharos, a new benthic chaetognath from Santa Catalina Island, California. Proceedings of the Biological Society of Washington, 100, 125–133.
- ↑ Conant, F. S. (1895). Description of two new chaetognaths: Spadella schizoptera and Sagitta hispida. Johns Hopkins University Circulars, 14(119), 77–78.