Children (44 direct children, 44 direct and indirect children):
Costoanachis similis
Costoanachis sparsa
Costoanachis floridana
Costoanachis semiplicata
Costoanachis avara
Costoanachis catenata
Costoanachis lafresnayi
Costoanachis rudyi
Costoanachis carmelita
Costoanachis cascabulloi
Costoanachis dentilabia
Costoanachis hotessieriana
Costoanachis scutulata
Costoanachis translirata
Costoanachis valae
Costoanachis beckeri
Costoanachis indistincta
Costoanachis sertulariarum
Costoanachis stimpsoni
Costoanachis atramentaria
Costoanachis fusidens
Costoanachis hilli
Costoanachis nigricans
Costoanachis rugulosa
Costoanachis spadicea
Costoanachis teevani
Costoanachis varia
Costoanachis geovanysi
Costoanachis albicostata
Costoanachis alcazari
Costoanachis aurea
Costoanachis jeffreysbayensis
Costoanachis calidoscopio
Costoanachis delahozi
Costoanachis castoi
Costoanachis fenneli
Costoanachis fluctuata
Costoanachis haitensis
Costoanachis peyrehoradensis
Costoanachis praeterebralis
Costoanachis problematica
Costoanachis rugosa
Costoanachis saccostata
Costoanachis terebralis