Abyssochrysos | |
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anatomy of Abyssochrysos melanioides removed from the shell | |
Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Family: | Abyssochrysidae |
Genus: |
Abyssochrysos Tomlin, 1927 [1] |
Type species | |
Abyssochrysos melanioides Tomlin, 1927 |
Abyssochrysos is a genus of bathyal sea snails, marine gastropod mollusks in the family Abyssochrysidae. [2]
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. [3]
Species within the genus Abyssochrysos include:
Abyssochrysos | |
---|---|
![]() | |
anatomy of Abyssochrysos melanioides removed from the shell | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Family: | Abyssochrysidae |
Genus: |
Abyssochrysos Tomlin, 1927 [1] |
Type species | |
Abyssochrysos melanioides Tomlin, 1927 |
Abyssochrysos is a genus of bathyal sea snails, marine gastropod mollusks in the family Abyssochrysidae. [2]
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. [3]
Species within the genus Abyssochrysos include: