Temporal range: Pennsylvanian
Polygnathodella is an extinct genus of conodont.
Glen K. Merrill stated in 1963 that "conodont workers have considered Idiognathoides to be a junior synonym of Polygnathodella but it now proves to be a junior synonym of Cavusgnathus. Polygnathodella and Cavusgnathus are shown to form a transitional series."
- Micropaleontology of the Pennsylvanian Johns Valley shale of the Ouachita Mountains, Oklahoma, and its relationship to the Mississippian Caney shale. B. H. Harlton, Journal of Paleontology, 1933, 7(1), pages 3-29 (Stable URL)
- Polygnathodella Harlton, 1933, or Idiognathoides Harris and Hollingsworth, 1933? Glen K. Merrill, Journal of Paleontology, March 1963, volume 37, issue 2 (abstract)
- "Polygnathodella" at the Encyclopedia of Life
- Polygnathodella at fossilworks.org (retrieved 11 July 2016)