Children (7 direct children, 700 direct and indirect children):
Thalassiosiraceae
(tree size 267)
Stephanodiscaceae
(tree size 382)
Skeletonemaceae
(tree size 37)
Lauderiaceae
(tree size 5)
Thalassiosiropsidaceae
(tree size 2)
Trochsiraceae
Skeletonemataceae