Bivalvia - Modiomorphida - Modiomorphidae
Synonyms: Corallidomus Whitfield 1895, Lithobia Koken 1902, Modiodesma Ulrich 1924 [objective synonym], Orthonotella Miller 1882, Sphenolium Miller 1889
Full reference: J. Hall. 1847. Containing descriptions of the organic remains of the lower division of the New York system (equivalent of the Lower Silurian rocks of Europe). Paleontology of New York 1:1-338
Parent taxon: Modiolopsinae according to L. Liljedahl 1994
Sister taxa: none
Subtaxa: Corallidomus concentricus, Lithobia atava, Modiodesma dalecarlica, Modiodesma kullsbergensis, Modiodesma leptaenarum, Modiolopsis alvae, Modiolopsis convexa, Modiolopsis dalecarlica, Modiolopsis kallholniensis, Modiolopsis leptaenarum, Modiolopsis modiolaris, Modiolopsis orthoconcavus, Modiolopsis pygmaea, Orthonotella faberi, Sphenolium cuneiforme
Ecology: stationary semi-infaunal suspension feeder