Abyssochrysidae is a 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...

 of sea snail

Snail

Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

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 clade Caenogastropoda

Caenogastropoda

Caenogastropoda is a taxonomic clade of a large diverse group of mostly marine gastropods.Caenogastropoda contains a majority of the families of shelled marine molluscs including such families as the periwinkles, cowries, wentletraps, moon snails, and cone snails.About 60% of all living gastropods...

 (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

).

Taxonomy

The family Provaniidae was previously placed in the "Zygopleuroid group" (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

). This family has no subfamilies according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

.

Subsequently was its sister group Provannidae

Provannidae

Provannidae is a family of deep water sea snails, marine gastropod mollusks in the clade Caenogastropoda .- Habitat :...

 placed in the superfamily Abyssochrysoidea

Abyssochrysoidea

Abyssochrysoidea is a superfamily of deep water sea snails, marine gastropod mollusks in the clade Caenogastropoda.These snails are part of the fauna of the hydrothermal vents and other deep-water habitats.-Families:...

 Tomlin, 1927 by Kain et al. (2008) and so also Abyssochrysidae was moved to Abyssochrysoidea.

Genera

Genera within this family include:

• Acanthostrophia
  • Acanthostrophia acanthica - from Italy, Jurassic
    Jurassic
    The Jurassic is a geologic period and system that extends from about Mya to  Mya, that is, from the end of the Triassic to the beginning of the Cretaceous. The Jurassic constitutes the middle period of the Mesozoic era, also known as the age of reptiles. The start of the period is marked by...
    
    . It is the oldest known species from the family Abyssochrysidae.
• Abyssochrysos
  Abyssochrysos
  Abyssochrysos is a genus of sea snails, marine gastropod mollusks in the family Abyssochrysidae.-Species:Species within the genus Abyssochrysos include:* Abyssochrysos bicinctum Bouchet, 1991* Abyssochrysos brasilianum Bouchet, 1991...
  
  Tomlin, 1927 - the type genus
• Humptulipsia Kiel, 2008
  • Humptulipsia raui (Goedert & Kaler, 1996) - synonym: Abyssochrysos raui Goedert & Kaler, 1996 - from Eocene

Further reading

• Goedert J. L. & Kaler K. L. (1996). "A new species of Abyssochrysos (Gastropoda: Loxonematoidea) from a Middle Eocene Cold Seep Carbonate in the Humptulips Formation, Western Washington". Veliger 39: 65-70.
• Houbrick R. S. (1979). "Classification and systematic relationships of the Abyssochrysidae, a relict family of bathyal snails". Smithsonian Contributions to Zoology 290: 1-21.