Megathura Pilsbry 1890 (snail)
Gastropoda - Fissurelloidea - Fissurellidae
PaleoDB taxon number: 8968
Parent taxon: Diodorinae according to J. B. Knight et al. 1960
Sister taxa: Diodora, Pseudofissurella, Stromboli
Subtaxa: Megathura crenulata, Megathura vancouverensis
Ecology: facultatively mobile epifaunal grazer