Lamniconus
| Lamniconus | |
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| Apertural view of shell of Conus lemniscatus (Reeve, 1849). | |
| Scientific classification | |
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| Subgenus: | Lamniconus da Motta, 1991
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| Type species | |
| Conus clerii Reeve, 1844 | |
| Synonyms | |
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Conus (Lamniconus) da Motta, 1991 | |
Lamniconus is a subgenus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies.[1]
In the latest classification of the family Conidae by Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015), Lamniconus has become a subgenus of Conus as Conus (Lamniconus) da Motta, 1991 (type species: Conus cleerii Reeve, 1844) represented as Conus Linnaeus, 1758 [2]
Distinguishing characteristics
[edit]The Tucker & Tenorio 2009 taxonomy distinguishes Lamniconus from Conus in the following ways:[3]
- Genus Conus sensu stricto Linnaeus, 1758
- Shell characters (living and fossil species)
- The basic shell shape is conical to elongated conical, has a deep anal notch on the shoulder, a smooth periostracum and a small operculum. The shoulder of the shell is usually nodulose and the protoconch is usually multispiral. Markings often include the presence of tents except for black or white color variants, with the absence of spiral lines of minute tents and textile bars.
- Radular tooth (not known for fossil species)
- The radula has an elongated anterior section with serrations and a large exposed terminating cusp, a non-obvious waist, blade is either small or absent and has a short barb, and lacks a basal spur.
- Geographical distribution
- These species are found in the Indo-Pacific region.
- Feeding habits
- These species eat other gastropods including cones.[3]
- Shell characters (living and fossil species)
- Subgenus Lamniconus da Motta, 1991
- Shell characters (living and fossil species)
- The shell is turbinate to elongate conical in shape. The protoconch is paucispiral. The spire is scalariform and concave in cross section. The shell is ornamented with cords and nodules which die out early in the postnuclear whorls. The anal notch is deep. The periostracum is tufted, and the operculum is small.
- Radular tooth (not known for fossil species)
- The anterior section of the radular tooth is roughly equal in length with the posterior section, the blade is long and covers most of the anterior section. A basal spur is present, and the barb is short. The radular tooth has serrations, and an internal terminating cusp.
- Geographical distribution
- The species in this genus occur in the occur in the West Atlantic region.
- Feeding habits
- These cone snails are presumed to be vermivorous, meaning that the cones prey on polychaete worms, based upon the radular tooth morphology.[3]
- Shell characters (living and fossil species)
Species list
[edit]This list of species is based on the information in the World Register of Marine Species (WoRMS) list. Species within the genus Lamniconus include:[1]
- Lamniconus carcellesi (Martins, 1945): synonym of Conus (Lamniconus) carcellesi Martins, 1945 represented as Conus carcellesi Martins, 1945
- Lamniconus clerii (Reeve, 1844) : synonym of Conus clerii Reeve, 1844
- Lamniconus lemniscatus (Reeve, 1849) : synonym of Conus lemniscatus Reeve, 1849
- Lamniconus patriceae Petuch & R. F. Myers, 2014: synonym of Conus patriceae (Petuch & R. F. Myers, 2014)
- Lamniconus tostesi (Petuch, 1986): synonym of Conus (Lamniconus) tostesi Petuch, 1986 represented as Conus tostesi Petuch, 1986
- Lamniconus xanthocinctus (Petuch, 1986) : synonym of Conus xanthocinctus Petuch, 1986
References
[edit]- ^ a b Lamniconus da Motta, 1991. Retrieved through: World Register of Marine Species on 07/26/11.
- ^ Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015). One, four or 100 genera? A new classification of the cone snails. Journal of Molluscan Studies. 81: 1-23
- ^ a b c Tucker J.K. & Tenorio M.J. (2009), Systematic Classification of Recent and Fossil Conoidean Gastropods, ConchBooks, Hankenheim, Germany, 295 pp.
Further reading
[edit]- Kohn A. A. (1992). "Chronological Taxonomy of Conus, 1758-1840". Smithsonian Institution Press, Washington and London.
- Monteiro A. (ed.) (2007). The Cone Collector 1: 1-28.
- Berschauer D. (2010). Technology and the Fall of the Mono-Generic Family The Cone Collector 15: pp. 51-54
- Puillandre N., Meyer C.P., Bouchet P., and Olivera B.M. (2011), Genetic divergence and geographical variation in the deep-water Conus orbignyi complex (Mollusca: Conoidea), Zoologica Scripta 40(4) 350-363.