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Ground sharks
Temporal range: Early Cretaceous–Recent[1]
File:Carcharhinus melanopterus2.jpg
Blacktip reef shark (Carcharhinus melanopterus)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Selachimorpha
Order: Carcharhiniformes
Compagno, 1977

The ground sharks, order Carcharhiniformes, are the largest order of sharks. With over 270 species, carcharhiniforms include a number of common types, such as the blue shark, catsharks, swellsharks, and sandbar shark.

Members of the orders are characterized by the presence of a nictitating membrane over the eye, two dorsal fins, an anal fin, and five gill slits.

The families in the order Carcharhiniformes are expected to be revised; recent DNA studies show that some of the traditional groups are not monophyletic.

Families

Timeline of genera

QuaternaryNeogenePaleogeneCretaceousJurassicHolocenePleistocenePlioceneMioceneOligoceneEocenePaleoceneLate CretaceousEarly CretaceousLate JurassicMiddle JurassicEarly JurassicPrionaceSphyrnaParagaleusGaleorhinusChaenogaleusNegaprionRhizoprionodonMustelusMegascyliorhinusIsogomphodonHemipristisGaleocerdoCarcharhinusEogaleusPremintreiaPachygaleusPhysogaleusTriakisAbdouniaSquatigaleusPalaeogaleusArchaeotriakisPteroscylliumParatriakisPterolamiopsScyliorhinusMacrourogaleusQuaternaryNeogenePaleogeneCretaceousJurassicHolocenePleistocenePlioceneMioceneOligoceneEocenePaleoceneLate CretaceousEarly CretaceousLate JurassicMiddle JurassicEarly Jurassic

References

External links

Template:Carcharhiniformes


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