Lesueurillidae

The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 categorizes Lesueurillidae in the superfamilia Euomphaloidea within the Paleozoic molluscs with anisostrophically coiled shells of uncertain position (Gastropoda?). This family has no subfamilies. == Genera ==

Genera in the family Lesueurillidae include • Eccyliopterus Remelé, 1888 • Eccyliopterus abendanoni • Eccyliopterus alatus (Roemer, 1876) - type species • Eccyliopterus corniculum • Eccyliopterus declivis Koken, 1925 - synonym: Eccyliopterus spirillum. • Eccyliopterus incresens • Eccyliopterus ottawaensis • Eccyliopterus owenanus • Eccyliopterus regularis - synonym: Eccyliopterus princeps. • Eccyliopterus replicata • Eccyliopterus septiferus • Eccyliopterus tolli • Eccyliopterus vagrans • Lesueurilla Koken, 1898 - type genus of the family Lesueurillidae • Lesueurilla acutangulum • Lesueurilla bohemica • Lesueurilla beloitensis • Lesueurilla dilatata • Lesueurilla grandis • Lesueurilla helix • Lesueurilla infundibulum (Koken, 1896) - type species • Lesueurilla isabellaensis • Lesueurilla kushanensis • Lesueurilla louderbacki • Lesueurilla magna • Lesueurilla prima • Lesueurilla shirakii • Lesueurilla sinkiangensis • Mestoronema P. J. Wagner, 2002 • Mestoronema bipatellare Koken, 1925 - type species • Mestoronema marginalis (Koken, 1925) • Mestoronema scotica (Longstaff, 1924) == Description ==

Fossils of family Lesueurillidae has sharp peripheral band and a short notch formed from deep V-shaped sinus. They are similar to Maclurites but they differ in early ontogenesis from them. == References ==