1. Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100, Denmark
2. Fossil and Mo-clay Museum, Museum Mors, Skarrehagevej 8, Nykøbing Mors, DK7900, Denmark
3. Norwegian College of Fishery Science, UiT – The Arctic University of Norway, Tromsø, Norway
4. Dipartimento di Scienze della Terra, Università degli Studi di Torino, Via Valperga Caluso 35, I-10125 Torino, Italy,