Gastropoda - Heterostropha - Pyramidellidae
Alternative spelling: Megastomia
Parent taxon: Odostomia according to F. E. Eames 1952
See also Sepkoski 2002
Sister taxa: Odostomia (Amaura), Odostomia (Ividia), Odostomia (Menestho), Odostomia (Odostomia), Odostomia (Oscilla), Odostomia (Ravnostomia), Odostomia acrybia, Odostomia acutidens, Odostomia alexanderi, Odostomia biangulata, Odostomia concavata, Odostomia conoidea, Odostomia cotuhensis, Odostomia crassispirata, Odostomia crenulata, Odostomia cuisensis, Odostomia derivata, Odostomia diaboli, Odostomia fetella, Odostomia granulatus, Odostomia griesensis, Odostomia griswoldensis, Odostomia guajirana, Odostomia insignifica, Odostomia lignitarum, Odostomia nigeriensis, Odostomia nuttalli, Odostomia obstinata, Odostomia oxia, Odostomia packi, Odostomia pakistanica, Odostomia pellucida, Odostomia plicata, Odostomia pupa, Odostomia reevei, Odostomia santana, Odostomia semicostata, Odostomia simillima, Odostomia simplex, Odostomia sperabilis, Odostomia talama, Odostomia talpa, Odostomia tenuis, Odostomia tenuisculpta, Odostomia turbinatus, Odostomia ventriosa, Odostomia virginalis, Odostomia winlockiana
Subtaxa: Megastomia canaliculata Megastomia carinata Odostomia (Megastomia) infrasubcarinata
Distribution: