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Cerion chrysalis drawing.jpg
Cerion chrysalis
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Heterobranchia
Superfamily: Urocoptoidea
Family: Cerionidae
Pilsbry, 1901[1]

See text

Cerionidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea.[2]

Pre-2008 taxonomy[edit]

According to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005),[3] the family Cerionidae is classified in the superfamily Orthalicoidea, within the informal group Sigmurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata. The family Cerionidae has no subfamilies.[3]

2008 taxonomy[edit]

Uit de Weerd (2008)[2] moved the Cerionidae to the newly established superfamily Urocoptoidea based on molecular phylogeny research.[2]

Fossil record[edit]

The oldest fossil cerionid is C. acherontis from the Upper Cretaceous Hell Creek Formation, in Montana, northwestern USA.[4] The second oldest record is the genus Brasilennea from the Brazilian Paleocene Itaboraí Basin, in Rio de Janeiro.[5]


Genera within the Cerionidae include:


  1. ^ Pilsbry H. A. (1901). Manual of Conchology (2)14(55): 174.
  2. ^ a b c Uit de Weerd D. R. (2008). "Delimitation and phylogenetics of the highly diverse land snail family Urocoptidae (Gastropoda, Pulmonata) based on 28S rRNA sequence data: A reunion with Cerion". Journal of Molluscan Studies 74: 317-329. doi:10.1093/mollus/eyn023.
  3. ^ a b c Bouchet P.; Rocroi J.-P.; Frýda J.; Hausdorf B.; Ponder W.; Valdés Á. & Warén A. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology. Hackenheim, Germany: ConchBooks. 47 (1-2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997. 
  4. ^ Roth, B. & Hartman, J.H. 1998. A probable Cerion (Gastropoda: Pulmonata) from Uppermost Cretaceous Hell Creek Formation, Garfield County, Montana. PaleoBios 18: 16–20.
  5. ^ Salvador, R.B.; Rowson, B.; Simone, L.R.L. 2011. Rewriting the fossil history of Cerionidae (Gastropoda: Pulmonata): new family assignment of the Brazilian Palaeocene genus Brasilennea Maury, 1935. Journal of Molluscan Studies 77: 445–447. doi:10.1093/mollus/eyr021
  6. ^ Maury, C.J. 1935. New genera and new species of fossil terrestrial Mollusca from Brazil. American Museum Novitates 764: 1–15.
  7. ^ Thompson, F.G. 2011. Mexistrophia, a new genus of Cerionidae from Mexico (Gastropoda: Pulmonata: Urocoptoidea). Nautilus 125(4): 182-192.

External links[edit]