Kulas H.A., Batten R.L. (1997). Silicified gastropods from the Permian Phosphoria rock complex of Wyoming. <em>Contributions to Geology, University of Wyoming.</em> 31(2): 33-58.[details]
MolluscaBase eds. (2025). MolluscaBase. Pharkidonotus altitropis Kulas & Batten, 1997 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1759365 on 2025-05-12
Marine Species Traits editorial board (2025). Marine Species Traits. Pharkidonotus altitropis Kulas & Batten, 1997 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1759365 on 2025-05-12
original descriptionKulas H.A., Batten R.L. (1997). Silicified gastropods from the Permian Phosphoria rock complex of Wyoming. <em>Contributions to Geology, University of Wyoming.</em> 31(2): 33-58.[details]