Duvalia, Taxa Only, Exact Match: 2 Treatments

Gentianales		new species	Janssen, Nico M. M., Clément, Arnaud & Bont, Willem, 2012, Mediterranean Neocomian belemnites, part 4: belemnites of the Barremian stratotype section, Carnets de Géologie [Notebooks on Geology] 2012, No. 2, pp. 200-274 : 200-274	200-274
Duvalia dilatata			Barroso-Barcenilla, Fernando, Antunes, Miguel Telles, Brandão, José Manuel, Callapez, Pedro Miguel, Santos, Vanda Faria dos & Segura, Manuel, 2018, The d’Orbigny Palaeontological Collection of the National Museum of Natural History and Science, Lisbon, Portugal: Historical perspective and revision of Cretaceous Cephalopoda, Geodiversitas 40 (20), pp. 505-519 : 514	514