Frau C. The systematic affinities between the Lower Cretaceous Ammonoidea Protacanthoplites abichi (Anthula, 1900) and Acanthohoplites aschiltaensis (Anthula, 1900). EJT [Internet]. 2023 Aug. 16 [cited 2026 Apr. 24];888(1):137–158. Available from: https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/2237