Children (38 direct children, 40 direct and indirect children):
Cyclocardia borealis
Cyclocardia spurca
(tree size 1)
Cyclocardia barbarensis
Cyclocardia ovata
Cyclocardia gouldii
Cyclocardia rjabininae
Cyclocardia nodulosa
Cyclocardia incisa
Cyclocardia umnaka
Cyclocardia bailyi
Cyclocardia stearnsii
Cyclocardia crebricostata
Cyclocardia armilla
Cyclocardia novangliae
Cyclocardia ventricosa
Cyclocardia crassidens
Cyclocardia astartoides
Cyclocardia beebei
Cyclocardia compressa
Cyclocardia congelascens
Cyclocardia isaotakii
Cyclocardia moniliata
Cyclocardia nipponensis
Cyclocardia ripensis
Cyclocardia thouarsii
Cyclocardia velutina
Cyclocardia elegans
Cyclocardia granulata
Arcturellina
(tree size 1)
Cyclocardia antarctica
Cyclocardia awamoensis
Cyclocardia christiei
Cyclocardia intermedia
Cyclocardia magna
Cyclocardia marama
Cyclocardia moniligena
Cyclocardia monodi
Cyclocardia pseutella