title: Tubospirina
text: # Tubospirina
  
  Tubospirina is an extinct genus of fossil sea snails, marine gastropod mollusks in the family Craspedostomatidae. These snails were parasitic-carnivores. They lived in the Silurian Period, Pridoli Age (from 418.7 ± 1.5 to 416 ± 2.8 mya).
  
  ## Etymology
  
  The genus name Tubospirina combines the Latin word tubus, meaning "tube" and the genus name Spirina.
  
  ## Description
  
  The genus Tubospirina is very similar to the genus Spirina, but it can be distinguished by the dextrally coiled shell with a flatly arched upper side. The shells are large, with a wide aperture and a characteristic ornamentation of rounded costae and interspaces. This new genus has been tentatively placed close to the genus Spirina in the family Craspedostomatidae.
  
  ## Species
  
  * Tubospirina tubicina - Previously known as Spirina tubicina Perner, 1903 - recombined as Tubospirina tubicina according to J. Frýda in 1998.
  
  ## Distribution
  
  This genus has been found in the Silurian of the Czech Republic.
  
  