World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Pachycrommium Woodring, 1928&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=954440 on 2026-08-28
Woodring, W. P. (1928). Miocene mollusks from Bowden, Jamaica. 2. Gastropods and discussion of results. Carnegie Institution of Washington Publication. 385: vii + 564 pp., 40 pls.
Clark, B. L. & Durham, J. W. (1946). Eocene faunas from the Department of Bolivar, Colombia. The Geological Society of America Memoir. 16: 1-126, pls. 1-27, map.