Extant genera

• Genus Caretta
  • Loggerhead sea turtle
    Loggerhead sea turtle
    The loggerhead sea turtle , or loggerhead, is an oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around long when fully grown, although larger specimens of up to have been discovered...
    
     (Caretta caretta)

• Genus Chelonia
  • Green sea turtle
    Green Sea Turtle
    The Green sea turtle or green turtle is a large sea turtle of the family Cheloniidae. It is the only species in the genus Chelonia. Its range extends throughout tropical and subtropical seas around the world, with two distinct populations in the Atlantic and Pacific Oceans...
    
     (Chelonia mydas)

• Genus Eretmochelys
  • Hawksbill sea turtle (Eretmochelys imbricata)

• Genus Lepidochelys
  • Kemp's ridley sea turtle (Lepidochelys kempii)
  • Olive ridley sea turtle (Lepidochelys olivacea)

• Genus Natator
  • Flatback sea turtle (Natator depressus) (Previously in Chelonia)

Extinct genera

• Genus †Argillochelys
  Argillochelys
  Argillochelys is an extinct genus of sea turtle from the middle to lower Eocene in what is now Britain. It was first named by Lydekker in 1889.-External links:* at the Paleobiology Database*...
  
  
  • †Argillochelys africana
  • †Argillochelys antiqua
  • †Argillochelys athersuchi
  • †Argillochelys cuneiceps

• Genus †Carolinochelys
  Carolinochelys
  Carolinochelys is an extinct genus of sea turtle from Oligocene of United States. It contains one species: C. wilsoni, and was first named by O.P. Hay in 1923.-Sources:***...
  
  
  • †Carolinochelys wilsoni

• Genus †Gigantatypus
  Gigantatypus
  Gigantatypus is an extinct late Maastrichtian sea turtle that lived in the southern regions of the Tethys Ocean about off the north eastern margins of Cretaceous Africa immediately before the Cretaceous–Tertiary extinction events . Fossil remains of Gigantatypus are so far only represented in...
  
  
  • †Gigantatypus salahi

• Genus †Procolpochelys
  Procolpochelys
  Procolpochelys is an extinct genus of sea turtle from the Miocene of what is now New Jersey. Its fossils have been found in the Calvert Formation. It was first named by Hay in 1908.-External links:* at the Paleobiology Database*...
  
  
  • †Procolpochelys grandaeva