BioStor
Helicodiscus parallelus (Say, 1817)
 | Mollusca of the Ozarkian Fauna H A Pilsbry (1906) Proceedings of The Academy of Natural Sciences of Philadelphia 58: 529-567 |
 | Some new Eocene fossils from Alabama (1907) Nautilus 21: 8-11 |
 | A Pleistocene molluscan fauna from Phillips county, Kansas G Dallas Hanna and Edward C Johnston (1913) Kansas University Science Bulletin 7(3): 111-121 |
 | Five new North American zonitids J P E Morrison (1937) Proceedings of The Biological Society of Washington 50: 55-60 |
 | Mollusca of the University of Kansas Natural History Reservation A Byron Leonard and C Raymond Goble (1952) University of Kansas Science Bulletin 34(16): 1013-1055 |
 | New species of Helicodiscus from the eastern United States (1962) Nautilus 75: 102-107 |
 | A new Pleistocene fauna and a new species of Biomphalaria (Basommatophora: Planorbidae) from southwestern Kansas, U.S.A (1966) Malacologia 4: 261-267 |
 | Remarks on Muricodrupa Iredale, 1918 (Muricidae: Thaidinae), with the description of a new species (1981) Nautilus 95: 77-82 |