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Orthonybyoceras isakari Kröger and Aubrechtova 2017

PaleoDB taxon number: 359673

Full reference: B. Kröger and M. Aubrechtova. 2017. Cephalopods from reef limestone of the Vasalemma Formation, northern Estonia (latest Sandbian, Upper Ordovician) and the establishment of a local warm-water fauna. Journal of Systematic Palaeontology 14(7):1-42

Belongs to Orthonybyoceras according to B. Kröger and M. Aubrechtova 2017

Sister taxa: Orthonybyoceras covingtonense, Orthonybyoceras dyeri, Orthonybyoceras moisense