Subfamily Cholodinae subfam. nov. Diagnosis Janassid petalodonts with relatively labiolingually thick median cusps with pointed apexes, lingual cristae robust and crest-like, basolabial tooth base orientation is longitudinally directed. Type genus Cholodus St. John and Worthern 1875. Included Genera Cypripediodens Duffin and Ward 2017; Cavusodus Itano 2023. Distribution Late Mississippian (Serpukhovian) to Late Pennsylvanian (Kasimovian-Gzhelian) of North America and United Kingdom.

Published as part of Hodnett, John-Paul M., Toomey, Rickard, Olson, Rickard, Tweet, Justin S. & Santucci, Vincent L., 2023, Janassid petalodonts (Chondrichthyes, Petalodontiformes, Janassidae) from the middle Mississippian (Viséan) Ste. Genevieve Formation, Mammoth Cave National Park, Kentucky, USA, pp. 1783-1792 in Historical Biology 36 (9) on pages 2-3, DOI: 10.1080/08912963.2023.2231955, http://zenodo.org/record/10014242