title: The first finding of spermatozeugmata in sipunculids (Sipuncula), animals with external fertilization.
authors.affiliation: Institute of Marine Biology, Far East Division, Russian Academy of Sciences, ul. Pal'chevskogo 17, Vladivostok, 690041 Russia.
authors.forename: A S
authors.initials: AS
authors.lastname: Maiorova
authors.forename: A V
authors.initials: AV
authors.lastname: Adrianov
mesh_terms: D000818:Animals; D005306:Fertilization; D005837:Genitalia, Male / Q000648:ultrastructure*; D008297:Male; D009348:Nematoda / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*