Praecuvierinidae
Encyclopedia
Praecuvierinidae is a family of extinct of small floating sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....

s, pelagic 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...

 opisthobranch gastropod mollusks in the superfamily Cavolinioidea
Cavolinioidea
The superfamily Cavolinioidea is the most speciose group of sea butterflies. Sea butterflies are pelagic marine gastropods, so called because they swim by flapping their wing-like parapodia.-Distribution:...

.

Genera

  • Genus Praecuvierina Janssen, 2005
    • Praecuvierina lura (Hodgkinson, in Hodgkinson, Garvie & Bé, 1992) - from Eocene
      Eocene
      The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...

      , Lutetian
      Lutetian
      The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between and . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene subepoch...

       of the United States.
  • Genus Texacuvierina Janssen, 2005
    • Texacuvierina gutta (Hodgkinson, in Hodgkinson, Garvie & Bé, 1992) - from Eocene, Bartonian
      Bartonian
      The Bartonian is, in the ICS's geological timescale, a stage or age in the middle Eocene epoch or series. The Bartonian age spans the time between and . It is preceded by the Lutetian and is followed by the Priabonian age.-Stratigraphic definition:...

      of the United States.
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