Children (10 direct children, 10 direct and indirect children):
Hypselocrinus arcanus
Hypselocrinus boonvillensis
Hypselocrinus calyculus
Hypselocrinus douglassi
Hypselocrinus hoveyi
Hypselocrinus maccabei
Hypselocrinus macrodactylus
Hypselocrinus neglectus
Hypselocrinus pleias
Hypselocrinus tethys