CZ EN
SEARCH  

Taxon profile

species

Pleurotomella allisoni H.A. Rehder & H.S. Ladd, 1973

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Raphitomidae »  genus Pleurotomella

Description

Shell small, elongate-biconic, strongly shouldered; apex incomplete on all three specimens but whorls of spire probably about seven; below the suture a wide, smooth, slightly concave anal fasciole is marked by close-set growth lines convex posteriorly; below the fasciole the whorls are shouldered by moderately strong elongate nodes that are directed anteriorly; about 18 nodes on the penultimate whorl, becoming obscure on the body whorl. Close-set, low, rounded spiral riblets are present over the entire shell. Aperture lenticular, extended into a moderately long anterior canal that is slightly recurved; outer lip thin and deeply indented at the suture; inner lip smooth and callused. Measurements of the holotype, USNM 703269:- height (incomplete) 14.9 mm, diameter 7.5 mm; paratype, USNM 703270 height (incomplete) 17.6 mm, diameter 6.6 mm.
Rehder H. A. & Ladd H. S. (1973) Deep and shallow-water mollusks from the Central Pacific.
Mid-Pacific Mountains
Author: Jan Delsing

Contributions to BioLib

Help us to expand this encyclopedia! If you are logged in, you can add new subtaxa, vernacular and scientific names, texts, images or intertaxon relationships for this taxon.

Comments