Biology:Abyssochrysos
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Abyssochrysos is a genus of bathyal sea snails, marine gastropod mollusks in the family Abyssochrysidae.[1]
Description
The characteristics (shell, radula and anatomy) of the species mark this genus as simple gastropods, unassigned in the clade Caenogastropoda. Their taenioglossate radula (formula: 2+1+1+1+2) is unique among the Prosobranchia because of the sickle-shaped rachidian tooth and the thick, sinuous, sharply cusped lateral teeth. They have tentacles but lack eyes. The mantle cavity goes deep (about 2½ whorls). The long, wide ctenidium is monopectinate. The pallial gonoducts are closed. The large penis-like organ is a right-dorsal mantle process.[2]
Species
Species within the genus Abyssochrysos include:
- Abyssochrysos bicinctus Bouchet, 1991[3][4]
- † Abyssochrysos bituminifer (C. W. Cooke, 1919)
- Abyssochrysos brasilianus Bouchet, 1991[3][5]
- † Abyssochrysos costatus (C. W. Cooke, 1919)
- Abyssochrysos eburneus Locard, 1897[6]
- Abyssochrysos melanioides Tomlin, 1927[7]
- Abyssochrysos melvilli Schepman, 1909[8]
- Abyssochrysos xouthos Killeen & Oliver, 2000[9][10]
- Species brought into synonymy
- Abyssochrysos bicinctum (Bouchet), 1991: synonym of Abyssochrysos bicinctus (Bouchet, 1991)
- Abyssochrysos brasilianum (Bouchet), 1991: synonym of Abyssochrysos brasilianus (Bouchet, 1991)
- Abyssochrysos eburneum (Locard, 1897): synonym of Abyssochrysos eburneus (Locard, 1897)
- † Abyssochrysos giganteum Kiel, K. A. Campbell, Elder & C. Little, 2008: synonym of † Ascheria gigantea (Kiel, K. A. Campbell, Elder & C. Little, 2008) (original combination)
- Abyssochrysos tomlini Barnard, 1963: synonym of Abyssochrysos melvilli (Schepman, 1909)
References
- ↑ Abyssochrysos Tomlin, 1927. Retrieved through: World Register of Marine Species on 4 May 2010.
- ↑ ¨Houbrick R.S. 1979. Classification and systematic relationships of the Abyssochrysidae, a relict family of bathyal snails (Prosobranchia; Gastropoda). Smithsonian Contributions to Zoology 290: 1-21
- ↑ 3.0 3.1 Bouchet P. (1991). "New records and new species of Abyssochrysos (Mollusca, Caenogastropoda). Journal of Natural History 25(2): 305–313. doi:10.1080/00222939100770221.
- ↑ Abyssochrysos bicinctum Bouchet, 1991. Retrieved through: World Register of Marine Species on 4 May 2010.
- ↑ Abyssochrysos brasilianum Bouchet, 1991. Retrieved through: World Register of Marine Species on 4 May 2010.
- ↑ Abyssochrysos eburneum (Locard, 1897). Retrieved through: World Register of Marine Species on 4 May 2010.
- ↑ Abyssochrysos melanioides Tomlin, 1927. Retrieved through: World Register of Marine Species on 4 May 2010.
- ↑ Abyssochrysos melvilli (Schepman, 1909). Retrieved through: World Register of Marine Species on 4 May 2010.
- ↑ Killeen I. J. & Oliver P. G. (2000). "A new species of Abyssochrysos (Gastropoda: Loxonematoidea) from the Oman margin". Journal of Molluscan Studies 66(1): 95–98. doi:10.1093/mollus/66.1.95
- ↑ Abyssochrysos xouthos Killeen & Oliver, 2000. Retrieved through: World Register of Marine Species on 4 May 2010.
- Bouchet P. (1991). New records and new species of Abyssochrysos (Mollusca, Caenogastropoda).' Journal of Natural History 25(2): 305–313
External links
- Tomlin, J. R. le B. (1927). Reports on the marine Mollusca in the collections of the South African Museum. II. Families Abyssochrysidae, Oocorythidae, Haliotidae, Tonnidae. Annals of the South African Museum 25(1): 77–83.
- Houbrick, R. S. (1979). Classification and systematic relationships of the Abyssochrysidae, a relict family of bathyal snails (Prosobranchia; Gastropoda). Smithsonian Contributions to Zoology. 290: 1-21
Wikidata ☰ Q4670759 entry
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