Crassispira semicolon

Crassispira semicolon
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Crassispira
Species:	C. semicolon
Binomial name
	Crassispira semicolon; (Sowerby I, 1816)
Synonyms
	† Crassispira (Crassispira) semicolon (Sowerby I, 1816); † Drillia (Crassispira) inflexa (Lamarck, 1850); † Pleurotoma inflexa Lamarck, 1850; † Pleurotoma semicolon Sowerby I, 1816;

Crassispira semicolon is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.^[1]

Subspecies: † Crassispira semicolon chameryensis (de Boury, 1899) (synonym: † Pleurotoma chameryensis de Boury, 1899) ^[2]

Description

The length of the shell attains 24.6 mm; its diameter 8.3 mm.

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

^ Worldwide Mollusc Species Data Base: Crassispira semicolon
^ J.-M. Pacaud and J. Le Renard. 1995. Révision des Mollusques Paléogénes du Bassin de Paris. IV - Liste systématique actualisée. Cossmanniana 3(4):155-187

G.B. Sowerby I (1812-1822), The mineral conchology of Great Britain 1-4 (1-66), 793 pp. pls. 1-383
Tracey, S. and Jonathan A. Todd. "Nomenclatural changes for some Bracklesham Group gastropods." Tertiary Research 16 (1996): 41-54.

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