Crassispira pseudoprincipalis

Crassispira pseudoprincipalis
	Image of a shell of Crassispira pseudoprincipalis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Crassispira
Species:	C. pseudoprincipalis
Binomial name
	Crassispira pseudoprincipalis; (Yokoyama, 1920)
Synonyms
	Clavus (Braohytoma) pseudoprincipalis Nomura, 1935; Drillia, pseudo-principalis Yokoyama, 1926; Inquisitor pseudoprincipalis. Makiyama, 1927; Pleurotoma, (Drillia) pseudo-principalis Yokoyama, 1920 (original combination);

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

Description

The length of the shell attains 27.5 mm, its diameter 8.3 mm.

According to Makiyama (1927, p. 104), Japanese specimens of this species differ from Crassispira bataviana (Martin, 1895) in having a shorter siphonal canal. The same appears to be true of the Okinawan and Formosan specimens.

Distribution

Fossils have been found in Miocene in Japan and in Pliocene strata in Okinawa, Japan.

References

^ F.S. MacNeil (1960), Tertiary and Quaternary Gastropoda of Okinawa; Professional Paper 339; USGS This article incorporates text from this source, which is in the public domain.

Yokoyama, 1920. Tokyo Imp. Univ. Coll. Sci. Jour., v. 39, art. 6, p. 37,
Yokoyama, 1926, Tokyo Imp. Univ. Fac. Sci. Jour., sec. 2, v. 1, pt. 9, p. 330pi. 1, fig. 21.
Makiyama, 1927, Kyoto Imp. Univ. Coll. Sci. Mem., ser. B, v. 3, no. 1, art. 1, p. 104; 1931, ser. B, v. 7, no. 1, art. 1, p. 7
Nomura, 1935, Tohoku Imp. Univ. Sci. Repts., 2d ser., v. 18, no. 2, p. 124, pi. 6, fig. 38.
Hatai and Nisiyama, 1952, Tohoku Univ. Sci. Repts., 2d ser., spec. v. 3, p. 232

[1] F.S. MacNeil (1960), Tertiary and Quaternary Gastropoda of Okinawa; Professional Paper 339; USGS This article incorporates text from this source, which is in the public domain.

[1]