Rugulina monterosatoi
(van Aartsen & Bogi, 1987)
Western Mediterranean.
Deposit feeder in the continental shelf and slope (100-500m).
Original taxon: daronia monterosatoi. Synonym: excavatus Monterosato, nomen nudum and preoccupied by the excavatus of C. B. Adams.
 
The shell is devoid of marked radial sculpture, except some prosocline growth-marks. It presents, at the outer edge of the subsutural ramp and near the base, two marked spiral threads that give it a somewhat carinate appearance.

150-200m deep, Capraia island, Archipelago Toscano, W. Italy. 0,7mm. Original pictures provided by A. Nappo (IT).
– (CC BY-NC-SA) –
This texture of varnished papier mâché is typical.
500m deep, off Dubrovnik, S. Croatia. 0,528mm. Original pictures provided by R. Stanić (HR) – (CC BY-NC-SA).

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