Children (43 direct children, 43 direct and indirect children):
Hypermastus randolphi
Hypermastus acutus
Hypermastus araeosomae
Hypermastus auritae
Hypermastus boschorum
Hypermastus bulbula
Hypermastus bulbulus
Hypermastus casta
Hypermastus colmani
Hypermastus cookeanus
Hypermastus coxi
Hypermastus cylindricus
Hypermastus echinocardiaphila
Hypermastus echinocardiophilus
Hypermastus echinodisci
Hypermastus epeterion
Hypermastus epiphanes
Hypermastus georgiregis
Hypermastus indistinctus
Hypermastus kilburni
Hypermastus lacteus
Hypermastus mareticola
Hypermastus minor
Hypermastus mucronatus
Hypermastus obliquistomum
Hypermastus orstomi
Hypermastus peronellicola
Hypermastus philippiana
Hypermastus philippianus
Hypermastus placentae
Hypermastus productus
Hypermastus pusilla
Hypermastus pusillus
Hypermastus rosa
Hypermastus ryukyuensis
Hypermastus sauliae
Hypermastus serratus
Hypermastus subula
Hypermastus tenuissimae
Hypermastus tokunagai
Hypermastus williamsi
Hypermastus ryukyeunsis
Hypermastus ryukeunsis
Hypermastus bulbulus
Hypermastus roemerianus
Hypermastus bountyensis
Hypermastus dunkerianus
Hypermastus munda