World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Turritella ola Plummer, 1933&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1878141 on 2026-08-29
Plummer, F. B. (1933). Part 3: Cenozoic systems in Texas. in Sellards; E. H.; Adkins, W. S.; Plummer, F. B. (Eds.) The Geology of Texas, Vol. 1, Stratigraphy. University of Texas Bulletin. 3232, pp. 519-818.
Stephenson, L. W. (1941). The larger invertebrate fossils of the Navarro Group of Texas (exclusive of corals and crustaceans and exclusive of the fauna of the Escondido Formation). The University of Texas Publication. 4101: 1-641.