Svratkina australiensis
(Chapman, Parr & Collins, 1934)
identified by scientist   
Quaternary
Banda, Timor and Arafura Sea

Svratkina australiensis
(Chapman, Parr & Collins, 1934)
identified by scientist   
Quaternary
Banda, Timor and Arafura Sea

Svratkina lajollaensis
Sliter, 1968
type specimen   holotype
Cretaceous
California

Svratkina tuberculata
(Balkwill & Wright, 1885)
identified by scientist   
Quaternary