Latouchella

Latouchella is an extinct genus of marine invertebrate animal, that is considered to be a mollusk and which may be a sea snail, a gastropod. It is a helcionellid from the Tommotian epoch of what is now Siberia. Its tightly coiled, spiral shell contains a number of low "walls" running up the front surface of the interior; these would have directed water currents within its shell. Between these walls are a series of furrows, parallel to the shell's aperture, giving casts of the internal structure the appearance of a railway line, with sleepers (created by furrows) tying together paired rails that run towards the apex of the shell.

Description
This genus had a curved, segmented shell, and it is often reconstructed as a snail-like creature.

Older taxonomy
The taxonomy of the genus Latouchella was originally like this: class Helcionelloida, order Helcionellida, superfamily Helcionelloidea, family Helcionellidae.

2005 taxonomy
The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 categorizes Latouchella in the family Coreospiridae in the superfamilia Scenelloidea within the Paleozoic molluscs of uncertain systematic position.

Latouchella was a type genus in the family Latouchellidae Golikov & Starobogatov, 1989, however Latouchellidae is a synonym of Coreospiridae.

2006-2007 taxonomy
The 2006–2007 taxonomy of the genus Latouchella is like this: class Helcionelloida, subclass Archaeobranchia, order Helcionelliformes, superfamily Helcionelloidea, family Coreospiridae.

Species
Species in the genus Latouchella include:
 * Latouchella costata (type)
 * L. accordionata
 * L. adelocosma
 * L. adunca
 * L. alicae
 * L. arcuata
 * L. arguta
 * L. burlingi
 * L. dimicostata
 * L. holmdalense
 * L. iacobinica
 * L. korobokovi
 * L. merino
 * L. ostenfeldense
 * L. pearylandica
 * L. pocatelloensis
 * L. sonlingpoensis
 * L. taijiangensis
 * ? Latouchella memorabilis Missarzhevsky in Rozanov et al., 1969
 * ? Latouchella orientalis