Kennedy, W.J. and Klinger, H.C. 2026. On the ammonite genus Rusoceras van Hoepen, 1946, a synonym of Pervinquieria (Pervinquieria) Böhm, 1910, from the Upper Albian of KwaZulu-Natal, South Africa. Acta Geologica Polonica. 76, 3 (Sep. 2026), e90. DOI:https://doi.org/10.24425/agp.2026.158204.