ID Keys
*Images in development

Limoidea (500 - 5000m)

Shells distinctly asymmetric, anterior ear lacking, anterior slope long and straight
Go to #2
Shells more or less symmetrical
Go to #3
Radially striated with up to 100 riblets
Acesta excavata
With c.30 prominent ribs bearing small scales especially anteriorly
Lima marioni
Hinge plate either side of ligament with denticles
Limea crassa
Hinge plate smooth
Go to #4
Median riblets distinctly larger, expressed internally as a groove.
Go to #5
Median riblets not disproportionately developed
Go to #7
Sculpture of the median riblet only, small shells <2mm
Limatula bisecta
Sculpture of numerous radial riblets
Go to #6
Hinge line oblique, about 40 riblets, ears not well developed.
Limatula celtica
Hinge line horizontal, about 50 riblets, ears prominent
Limatula subovata
Outline narrowly oblong, with about 38 fine radial riblets
Limatula thalassae
Outline oval with less than 33 riblets
Go to #8
Anterior slope much straighter than posterior, 22-26 riblets
Limatula jeffreysi
Curvatures of anterior and posterior not noticeably discrepant, 27-33 riblets
Limatula margaretae