Plagiodontes dentatus has a fossil record extending back to the Brazilian Paleocene, with a supposed specimen belonging to this species found in the limestones of Itaboraí Basin.[1][3] It has also been recorded from the Miocene of Uruguay and Miocene and Pleistocene of Argentina.[4][5][2]
References
^ abSalvador, Rodrigo Brincalepe; de Simone, Luiz Ricardo Lopes (1 June 2012). "New fossil pulmonate snails from the Paleocene of Itaboraí Basin, Brazil (Pulmonata: Cerionidae, Strophocheilidae, Orthalicidae)". Archiv für Molluskenkunde: International Journal of Malacology. 141 (1): 43–50. doi:10.1127/arch.moll/1869-0963/141/043-050. S2CID88222194.