Fine structure of the pharyngeal apparatus of the pelagosphera larva in Phascolosoma agassizii (Sipuncula) and its phylogenetic significance Alexander B. TzetlinGünter Purschke Original Article 06 July 2006 Pages: 109 - 117
Ultrastructure of multicellular foregut glands in selected Solenogastres (Mollusca) Ch. Todt Original Article 11 May 2006 Pages: 119 - 134
Occurrence of biflagellate spermatozoa in Cetopsidae, Aspredinidae, and Nematogenyidae (Teleostei: Ostariophysi: Siluriformes) Maria Angélica SpadellaClaudio OliveiraIrani Quagio-Grassiotto Original Article 20 May 2006 Pages: 135 - 145
Formation of the arthropod labrum by fusion of paired and rotated limb-bud-like primordia Melanie A. KimmNikola-Michael Prpic Original Article 18 May 2006 Pages: 147 - 155
Reproduction and sperm structure in Galeommatidae (Bivalvia, Galeommatoidea) Åse JespersenJørgen Lützen Original Article 20 June 2006 Pages: 157 - 173