Dwardius
Extinct genus of sharks
From Wikipedia, the free encyclopedia
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: | |
|---|---|
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| 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
