The ultrastructure and formation of the calcareous ossicles in the body wall of the sea cucumber Leptosynapta clarki (Echinodermata, Holothuroida) Stephen A. Stricker OriginalPaper Pages: 209 - 222
Anatomy and ultrastructure of ventral pharyngeal organs and their phylogenetic importance in Polychaeta (Annelida) G. Purschke OriginalPaper Pages: 223 - 239
A biomechanical analysis of spitting in archer fishes (Pisces, Perciformes, Toxidae) G. C. A. ElshoudP. Koomen OriginalPaper Pages: 240 - 252
Development of the pedicle in the articulate brachiopod Terebratalia transversa (Brachiopoda, Terebratulida) Stephen A. StrickerChristopher G. Reed OriginalPaper Pages: 253 - 264
Ultrastructural investigations of presumed photoreceptors as a means of discrimination and identification of closely related species of the genus Microphthalmus (Polychaeta, Hesionidae) Arnold PietschWilfried Westheide OriginalPaper Pages: 265 - 276