Pseudoscapanorhynchidae is a

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

of extinct mackerel sharks that lived during the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

and potentially the

Paleogene The Paleogene Period ( ; also spelled Palaeogene or Palæogene) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period Ma (million years ago) to the beginning of the Neogene Period Ma. It is the fir ...

. It currently includes '' Cretodus'', ''

Eoptolamna ''Eoptolamna'' is an extinct genus of mackerel sharks that lived during the Cretaceous. It contains two valid species, ''E. eccentrolopha'' and ''E. supracretacea'', which have been found in Europe and North Africa North Africa (sometimes ...

'', '' Leptostyrax'', '' Protolamna'', '' Pseudoscapanorhynchus'', and possibly '' Lilamna''.

References

Prehistoric Lamniformes Lamniformes Prehistoric cartilaginous fish families Cretaceous sharks {{paleo-shark-stub