Ludbrook N. H. 1960. Scaphopoda, in MOORE R. C. (ed.), Treatise on Invertebrate Paleontology, Part I (Mollusca 1). Geological Society of America and University of Kansas Press, New York; Lawrence: 37-41
125962
Ludbrook, N. H.
1960
Scaphopoda
Treatise on Invertebrate Paleontology, Part I (Mollusca 1)