Children (9 direct children, 9 direct and indirect children):
Pachymatisma johnstonia
Pachymatisma bifida
Pachymatisma monaena
Pachymatisma areolata
Pachymatisma normani
Pachymatisma geodiformis
Pachymatisma nodosa
Pachymatisma intermedia
Pachymatisma contorta