Abstract
The structure of the male ducts and their relative positions are significant indicators of the fact that the Lumbriculidae do not represent the stem forms of the Oligochaeta, confirming the recently expressed opinion of Hrabě (1983). However, the same arguments provide the basis for the separation of Dorydrilus in the family Dorydrilidae.
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References
Brinkhurst, R. O., 1971. In: R. Brinkhurst & B. Jamieson (eds.), Aquatic Oligochaeta of the World. Univ. Toronto Press, 860 pp.
Brinkhurst, R. O., 1982. Evolution in the Annelida, Can. J. Zool. 60: 1043–1059.
Goodrich, E. S., 1946. The study of nephridia and genital ducts since 1895. Q. J. microsc. Sci. 86: 113–392.
Hrabě, S., 1983. Evolution of the family Lumbriculidae. Note on the classification of the class Oligochaeta. Hydrobiologia 102: 171–173.
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Brinkhurst, R. Comments on the evolution of the Annelida. Hydrobiologia 109, 189–191 (1984). https://doi.org/10.1007/BF00011578
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DOI: https://doi.org/10.1007/BF00011578