Children (15 direct children, 158 direct and indirect children):
Tethya
(tree size 109)
Tectitethya
(tree size 5)
Stellitethya
(tree size 5)
Tethycometes
(tree size 2)
Halicometes
(tree size 9)
Columnitis
(tree size 2)
Taboga
Burtonitethya
(tree size 1)
Anthotethya
(tree size 1)
Laxotethya
(tree size 1)
Nucleotethya
(tree size 1)
Oxytethya
(tree size 1)
Tethyastra
(tree size 1)
Tethytimea
(tree size 3)
Xenospongia
(tree size 2)