The spermatozoon of the Echiniscidae (Tardigrada, Heterotardigrada) and its phylogenetic significance Lorena RebecchiAlessandra GuidiRoberto Bertolani Original Article Pages: 3 - 9
Yellow-bellied marmots (Marmota flaviventris) 'in the shape space' (Rodentia, Sciuridae): sexual dimorphism, growth and allometry of the mandible Andrea CardiniPaolo Tongiorgi Original Article Pages: 11 - 23
Protective mechanisms against the action of nematocysts in the epidermis of Cratena peregrina and Flabellina affinis (Gastropoda, Nudibranchia) Rainer MartinPaul Walther Original Article Pages: 25 - 32
Fine structure of the ciliated cells and ciliary rootlets of Intoshia variabili (Orthonectida) George S. SlyusarevReinhardt Kristensen Original Article Pages: 33 - 39
Sexing at the larval stage in two ant species of the Formicoxenini (Hymenoptera) Diethe Ortius-LechnerMarkus RĂ¼gerTina Wanke Original Article Pages: 41 - 45
Morphological plasticity of the outline and the internal structures of the shell of the Recent Terebratella tenuis sp. nov. (Brachiopoda, Terebratulida) Anthony Tort Original Article 22 January 2003 Pages: 47 - 54