Cleavage and gastrulation of the euphausiacean Meganyctiphanes norvegica (Crustacea, Malacostraca) Frederike AlwesGerhard Scholtz Original Article 19 March 2004 Pages: 125 - 137
Ultrastructure of the spermatozoa of Parenterodrilus taenioides (Protodrilida: “Polychaeta”) and its phylogenetic significance Claude Jouin-ToulmondGünter Purschke Original Article 09 March 2004 Pages: 139 - 146
Jaw growth and replacement in Ophryotrocha labronica (Polychaeta, Dorvilleidae) Hannelore Paxton Original Article 19 March 2004 Pages: 147 - 154
Secretory and defensive functions of the duct system of the lactating mammary gland of the African elephant (Loxodonta africana, Proboscidea) Peter StumpfUlrich Welsch Original Article 06 April 2004 Pages: 155 - 167
Musculature and nervous system of Gnathostomula peregrina (Gnathostomulida) shown by phalloidin labeling, immunohistochemistry, and cLSM, and their phylogenetic significance Monika C. M. MüllerWolfgang Sterrer Original Article 15 April 2004 Pages: 169 - 177