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Abyssochrysos Costatus
''Abyssochrysos'' is a genus of bathyal sea snails, marine (ocean), marine gastropod mollusks in the family (biology), family Abyssochrysidae. 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 Whorl (mollusc), whorls). The long, wide Ctenidium (mollusc), ctenidium is monopectinate. The pallial gonoducts are closed. The large penis-like organ is a right-dorsal mantle process. Species Species within the genus ''Abyssochrysos'' include: * ''Abyssochrysos bicinctus'' Bouchet, 1991Bouchet P. (1991). "New records and new species of ''Abyssochrysos'' (Mollusca, Caenogastropoda). ''Journal of Natural History'' 25(2): 305–313. . * †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abyssochrysos Melanioides
''Abyssochrysos melanioides'' is a species of sea snail, a marine gastropod mollusk in the family (biology), family Abyssochrysidae. This is the type specimen for which Tomlin created a new family Abyssochrisidae, but couldn't refer at the time to any superfamily. Some years later he thought it had any affinities with the families Littorinidae Children, 1834 and Thiaridae Gill, 1871 (1823). Houbrick (1979) brought the then known species of ''Abyssochrysos'' in the superfamily Loxonematacea Koken, with close affinities to the families Zygopleuridae Wenz, 1939, Paleozygopleuridae Horny, and Pseudozygopleuridae Knight, 1930. Distribution * The type specimen was dredged from a depth of 1645 m to 1828 m off the Cape of Good Hope, South Africa. * PhilippinesBouchet P. (1991). "New records and new species of ''Abyssochrysos'' (Mollusca, Caenogastropoda). ''Journal of Natural History'' 25(2): 305–313. . * Indonesia Description File:Abyssochrysos melanioides shell.png, gastropod shel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |