Order: Tintinnida, Family: Favellidae, Genera: Poroecus, Cymatocylis, Favella, Family: Ptychocylididae, Genus: Ptychocylis
Marshall, S.M. (1969). Order: Tintinnida, Family: Favellidae, Genera: Poroecus, Cymatocylis, Favella, Family: Ptychocylididae, Genus: Ptychocylis. Fiches d'identification du zooplancton, 121. ICES: Copenhagen. 6 pp.
Deel van: Fiches d'identification du zooplancton. Conseil International pour l'Exploration de la Mer: Charlottenlund. ISSN 0443-9155, meer
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