Lesueurillidae

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).

Lesueurillidae
Lesueurilla helix
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
Superfamily:
Euomphaloidea
Family:
Lesueurillidae

Genera

see text.

Taxonomy

The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005[2] 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[3]

  • 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[1]
    • 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.[1] They are similar to Maclurites but they differ in early ontogenesis from them.[1]

References
  1. Wagner P. J. 2002. Phylogenetic relationships of the earliest anisostrophically coiled gastropods. Smithsonian Contributions to Paleobiology, 88: 152 pp. Page 75.
  2. Bouchet 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. ISBN 3-925919-72-4. ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278
  3. Lesueurillidae. The Paleobiology Database, accessed 13 August 2009.
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