Children (14 direct children, 14 direct and indirect children):
Placotrochus laevis
Placotrochus pedicellatus
Placotrochus candeanus
Placotrochus costatus
Placotrochus deltoideus
Placotrochus elegans
Placotrochus elongatus
Placotrochus fuscus
Placotrochus inflectus
Placotrochus magnus
Placotrochus pueblensis
Placotrochus sawkinsi
Placotrochus texanus
Placotrochus corniculatus