Baranomys kowalskii is extinct species of rodent, from the Baranomys genus of the Baranomyinae subfamily of the Cricetidae family.Florian Heller: Die Wühlmäuse (Mammalia, Rodentia, Arvicolidae) des Ältest- und Altpleistozäns Europas: Eine übersieht über die bisher bekannten Gattungen und Arten. In: Quartär – International Yearbook for Ice Age and Stone Age Research. 1, 1968. Friedrich-Alexander-Universität Erlangen-Nürnberg (in German).Wilson Don E., Reeder DeeAnn M. (editors): Arvicolinae. In: Mammal Species of the World. A Taxonomic and Geographic Reference, vol. 3. Johns Hopkins University Press, 2005. It lived in Europe during the Pliocene epoch, 15 million years BCE, being one of the oldest known members of Baranomys family.Oldrich Fejfar, Heinrich Wolf-Dieter: Microtoid cricetids and the early history of arvicolids (Mammalia, Rodentia). In: Palaeontologia Electronica. Society of Vertebrate Paleontology, 2011. It was an ancestor of modern Arvicolinae. The animal was described by Miklós Kretzoi in 1959, who based his research on the fossils found near the village in Podlesice in Silesian Voivodeship, Poland. It was named after a paleontologist and zoologist Kazimierz Kowalski.Adam Nadachowski, Lars Werdelin (editors): Taxonomy names honoring Kazimierz Kowalski. In: Acta zoologica cracoviensia. 39 (1), p. xxix-xxx, 1996. Instytut Systematyki i Ewolucji Zwierząt PAN. ISSN 0065-1710.

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