Ganopristidae is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

family of

cartilaginous fish Chondrichthyes (; ) is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or ''bony fishes'', which have skeletons primarily composed of bone tissue ...

from the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

belonging to the suborder

Sclerorhynchoidei Sclerorhynchoidei is an extinct suborder of rajiform rays that had long rostra with large denticles similar to sawfishes and sawsharks. This feature was convergently evolved and their closest living relatives are actually skates. While they ...

. While the name Sclerorhynchidae is often used for this family, it is a junior synonym of Ganopristidae. This family contains the genera ''

Libanopristis ''Libanopristis'' is an extinct genus of ganopristid sclerorhynchoid that lived in Lebanon during the Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geolog ...

'', ''

Micropristis ''Micropristis'' is an extinct genus of ganopristid sclerorhynchoid that lived in the Middle East and Europe during the Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is di ...

'', and ''

Sclerorhynchus ''Sclerorhynchus'' (from el, σκληρός , 'hard' and el, ῥύγχος 'snout') is an extinct genus of ganopristid sclerorhynchoid that lived during the Late Cretaceous. The genus ''Ganopristis'' is considered a junior synonym of ''Scler ...

''. The type genus ''Ganopristis'' is considered to be a junior synonym of ''Sclerorhynchus''.

References

{{Taxonbar, from=Q108908110 Prehistoric cartilaginous fish families Rajiformes