Fischer, J. & Reich, M. (2013)
On the Early Cretaceous chondrichthyan egg capsule Palaeoxyris jugleri (von Ettingshausen) also known as Spirangium. In Schwarz, C. & Kriwet, J. (eds), 6th International Meeting on Mesozoic Fishes – Diversification and Diversity Patterns, Vienna, Austria August 4th–10th, 2013, 24
Reich, M. & Frenzel, P. (2002)
Die Fauna und Flora der Rügener Schreibkreide (Maastrichtium, Ostsee) / The fauna and flora of the Rügen White Chalk (Maastrichtian, Baltic Sea). Archiv für Geschiebekunde, 3(2/4), 73–284