Functional anatomy of oil glands in Collohmannia gigantea (Acari, Oribatida) Günther RaspotnigReinhart SchusterGünther Krisper Original Article 23 April 2003 Pages: 105 - 112
Regulation of diurnal filter feeding by a novel gill structure in Amblypharyngodon melettinus (Teleostei, Cyprinidae) Rudolf HoferWilli SalvenmoserFritz Schiemer Original Article 18 April 2003 Pages: 113 - 118
The aquiferous system of Scolymastra joubini (Porifera, Hexactinellida) studied by corrosion casts Giorgio BavestrelloAttilio ArilloCarlo Cerrano Original Article 29 April 2003 Pages: 119 - 123
Ultrastructure of the stomochord and the heart–glomerulus complex in Rhabdopleura compacta (Pterobranchia): phylogenetic implications Georg MayerThomas Bartolomaeus Original Article 27 May 2003 Pages: 125 - 133
Comparative sperm ultrastructure of Neodasys ciritus and Musellifer delamarei, two species considered to be basal among Chaetonotida (Gastrotricha) Loretta GuidiRoberto MarottaMaria Balsamo Original Article 25 June 2003 Pages: 135 - 143
Rib fabrication in Ostreoidea and Plicatuloidea (Bivalvia, Pteriomorphia) and its evolutionary significance Antonio G. ChecaAntonio P. Jiménez-Jiménez Original Article 24 June 2003 Pages: 145 - 159