The Tofanellidae is an extinct taxonomic 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

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 informal group Lower Heterobranchia

Lower Heterobranchia

Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly-evolved sea slugs and sea snails, within the clade Heterobranchia...

.

Subfamilies

The family Tofanellidae consists of two following 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...

):

• Tofanellinae Bandel, 1995
• Usedomellinae Gründel, 1998

Genera

Genera within the family Tofanellidae include:

Tofanellinae

• Tofanella Bandel, 1995 - type genus of the family Tofanellidae, from the late Triassic
  Late Triassic
  The Late Triassic is in the geologic timescale the third and final of three epochs of the Triassic period. The corresponding series is known as the Upper Triassic. In the past it was sometimes called the Keuper, after a German lithostratigraphic group that has a roughly corresponding age...
  
  

Usedomellinae

• Usedomella Gründel, 1998 - type genus of the subfamily Usedomellinae
  • Usedomella laevigatoidea (Gründel, 1993) - from mid Jurassic
  • Usedomella lata http://www.pbdb.org/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_no=70543&is_real_user=1
  • Usedomella magnoconcha http://www.pbdb.org/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_name=Usedomella+magnoconcha&is_real_user=1
  • Usedomella schroederi Gründel, 1998 - from the Early Jurassic
    Early Jurassic
    The Early Jurassic epoch is the earliest of three epochs of the Jurassic period...
    
    
  • Usedomella winkleri http://www.pbdb.org/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_name=Usedomella+winkleri&is_real_user=1

Bandel (2005) recognized genus Graphis Jeffreys, 1867 as a living fossil

Living fossil

Living fossil is an informal term for any living species which appears similar to a species otherwise only known from fossils and which has no close living relatives, or a group of organisms which have long fossil records...

within the subfamily Usedomellinae.