Children (16 direct children, 33 direct and indirect children):
Archelon
(tree size 1)
Protostega
(tree size 4)
Chelospharginae
Protosteginae
(tree size 2)
Bouliachelys
Santanachelys
(tree size 1)
Desmatochelys
(tree size 2)
Atlantochelys
(tree size 1)
Calcarichelys
(tree size 1)
Cratochelone
(tree size 1)
Neptunochelys
(tree size 1)
Notochelone
(tree size 1)
Chelosphargis
Terlinguachelys
(tree size 1)
Pneumatoarthrus
(tree size 1)
Iserosaurus