Lesueurillidae is an extinct family of paleozoic molluscs (gastropods?) with anisostrophically coiled shells of uncertain position (Gastropoda?) (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
Taxonomy The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. 2005. Classification and nomenclator of gastropod families. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278 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 includeLesueurillidae. The Paleobiology Database, accessed 13 August 2009. 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