Crassispira semicolon

Crassispira semicolon is an extinct species of carnivorous sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Subspecies: † Crassispira semicolon chameryensis (de Boury, 1899) (synonym: † Pleurotoma chameryensis de Boury, 1899 )

Description
The length of the shell attains 24.6 mm; its diameter 8.3 mm. It lived from roughly the Eocene period 47.8 - 41.3 million years ago, before having a last known appearance 3.60 - 2.59 million years ago, during the Cenozoic period.

Distribution
Fossils have been found in Pliocene and Middle Eocene strata off Norfolk, Great Britain; also in the Paris Basin and the Loire Basin, France