Tenebrincola is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of sea snail

Sea snail

Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....

s, marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusks in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Volutidae

Volutidae

Volutidae, common name volutes, are a taxonomic family of predatory sea snails that range in size from 9 mm to over 500 mm, marine gastropod mollusks...

. It is a Western Pacific abyssal genus, which is defined by a very thin, smooth shell, a radula

Radula

The radula is an anatomical structure that is used by molluscs for feeding, sometimes compared rather inaccurately to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus...

 of the fulgorarid

Fulgorariinae

The subfamily Fulgorariinae contains sea snails, marine gastropod mollusks in the family Volutidae. They are characterized by an uniserial radula with tricuspid teeth. Lateral cusps are thickest along the lateral edge, broader and generally longer than the central cusps. The protoconch is large or...

 type, and the presence of an operculum. Its phylogenetic relationship with the Asian fulgorarids needs to be clarified.

Species

Species within the genus Tenebrincola include:

• Tenebrincola cukri
  Tenebrincola cukri
  Tenebrincola cukri is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes....
  
  (Rokop, 1972)

The species includes two populations: Tenebrincola cukri cukri (Rokop, 1972) - Baja California and Tenebrincola cukri frigida Harasewych & Kantor, 1991 - Aleutian Trench.