05 Emarginula fissura

05 Emarginula fissura

The aperture is oval, slightly wider at the posterior, and has its rim crenulated by the ends of the surface ridges. The interior is nacreous white with the exterior ridges showing through.
L. 5.8 mm, W. 4.6 mm, H. 3.2 mm, Menai Strait, Wales, March 2015.
Full SPECIES DESCRIPTION at flic.kr/p/2odgEy1
Sets of OTHER SPECIES at:
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