Dwardius

Dwardius is an extinct genus of cardabiodontid^[1] sharks which existed during the Cretaceous period in what is now Australia, England,^[2] France, and India. It was described by Mikael Siverson in 1999,^[3] as a new genus for the species Cretalamna woodwardi, which had been described by J. Hermann in 1977.^[4] Another species, D. siversoni, was described from the middle Albian of northeastern France by V.I. Zhelezko in 2000; the species epithet honours the author of the genus.^[5] A new species, D. sudindicus, was described by Charlie J. Underwood, Anjali Goswami, G.V.R. Prasad, Omkar Verma, and John J. Flynn in 2011, from the Cretaceous Karai Formation of India.^[6]

Dwardius Temporal range: Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N
Associated teeth of D. woodwardi (NHMUK PV OR 39053) from Cretaceous chalk in Kent, England
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Division:	Selachii
Order:	Lamniformes
Family:	†Cardabiodontidae
Genus:	†Dwardius Siverson, 1999

Species

• Dwardius woodwardi (Hermann, 1977)
• Dwardius siversoni Zhelezko, 2000
• Dwardius sudindicus Underwood et al., 2011