CARTER, J. G. (ed.) 1990. Skeletal Biomineralization; Patterns, Processes and Evolutionary Trends. Vol. 1. Van Nostrand Reinhold, New York, 832pp.
 

HASZPRUNAR, G. 1988. On the origin and evolution of major gastropod groups, with special reference to the Streptoneura. J. Molluscan Stud. , 54: 367-441.
 

PONDER, W. F. and WARÉN, A. 1988. Classification of the Caenogastropoda and Heterostropha - a list of the family-group names and higher taxa. Malacological Review, Supplement 4: 288- 326.
 

SCARABINO, V. 1995. Scaphopoda of the tropical Pacific and Indian Oceans, with description of 3 new genera and 42 new species. pp. 189-379 In Bouchet, P. (ed.) Résultats des Campagnes MUSORSTOM, Volume 14. Mémoires. Muséum National d'Histoire Naturelle, 167.
 

SKELTON, P. W. and Benton, M. J. 1993. Mollusca: Rostroconchia, Scaphopoda and Bivalvia. pp. 237-263 In Benton, M.J. (ed.), The Fossil Record 2. Chapman & Hall, London, 845pp.
 

TRACEY, S., TODD, J. A. and ERWIN, D. H. 1993. Mollusca: Gastropoda. pp. 131-167 In Benton, M.J. (ed.), The Fossil Record 2. Chapman & Hall, London, 845pp.
 

VAUGHT, K. C. 1989. A classification of the living Mollusca. American Malacologists Inc., Melbourne, U.S.A. xii + 195pp.