Nuculana minuta (Müller, 1776)
Nuculanoidea : Nuculanidae
Inequilateral, the beaks lie approximately 65% of dorsal margin length from posterior.
Elongate-oval with a long, truncated rostrum: antero-dorsal margin rounded and sloping, anterior end deeply rounded; postero-dorsal margin long and slightly concave, postero-ventral margin slightly concave; escutcheon short and indistinct; lunule long, lanceolate, conspicuously raised with well defined, raised, sharp edges; a second well defined ridge radiates posteriorly to form the rostrum which has a straight, truncated end.
Sculpture: Prominent, well defined, regularly-spaced raised concentric ridges, more prominent and raised near the outer margins, also very fine, widely spaced radial lines. Margin: Smooth. Ligament: Internal, opisthodetic, with a rounded triangular ligament seated in a well-developed resilifer. Hinge: Taxodont: relatively solid, continuous hinge plate, anterior part curved (convex), narrow below the beaks, broadening towards the anterior end. Posterior part long and concave. Hinge plate with a well-developed resilifer. Teeth chevron-shaped, moderately long and pointed, usually 15-18 posterior and 18-20 anterior of the resilifer. Pallial Musculature: Pallial sinus shallow and indistinct. Periostracum: Matt surface, grey-green to olive coloured, sometimes with orangey or brown coloured bands. Shells sometimes coated or speckled with deposits of manganese. Colour: White.
Distribution & Ecology
Substrates ranging in size from silty sand to coarse gravel but usually always with a muddy element.
Continental Shelf (to 200m)
Additional Information & Related Species
Nuculanoidea : Nuculanidae
Listed are literature citing Nuculana minuta (Müller, 1776). Reference containing the species Type Description is highlighted.
- Conchological Society
of Great Britain & Ireland
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