Reference

Günter Schweigert, Armin Scherzinger, Horacio Parent (2002): The Volanoceras lineage (Ammonoidea, Simoceratidae) – a tool for long-distance correlations in the Lower Tithonian – Stuttgarter Beiträge Naturkunde Serie B [Paläontologie] – 326_B: 1 - 43.