Hove, Harry A. ten and Pantus, Frans J. A. 1985. Distinguishing the genera Apomatus Philippi, 1844 and Protula Risso, 1826 (Polychaeta: Serpulidae). A further plea for a methodical approach to serpulid taxonomy. Zoologische Mededeelingen (Leiden) 59(32): 419-437.
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Hove, H. A.; Pantus, F. J. A.
1985
Distinguishing the genera Apomatus Philippi, 1844 and Protula Risso, 1826 (Polychaeta: Serpulidae). A further plea for a methodical approach to serpulid taxonomy