Shell minute, not triangular in shape as philippiana but ovate, more elongate, with a round anterior margin and an elliptic posterior one. Microsculpture of numerous and thin commarginal growth marks. Conspicuous prodissoconches. Hinge: anterior teeth 7, posterior 6, as in (the possible ancestor) Yoldiella micrometrica (Seguenza, 1877).
1000m deep, Capo Teulada, SW. Cagliari, S. Sardinia. 1,2mm.
350m deep, off Cavtat, Dubrovnik-Neretva Comitat, S. Croatia. 1,4mm. Original pictures provided by R. Stanić (HR).
– (CC BY-NC-SA) –
« Hinge plate moderately thick, making a 130° angle, anterior row a little longer than posterior one. Dentition taxodont, with chevron-shaped teeth, numbering seven anteriorly and six posteriorly in holotype. Ligament pit shallow, elliptic. Muscle scars roundish, fairly well impressed. Pallial line forming a shallow, hardly distinct posterior sinus. » – R. La Perna: “The identity of Yoldia micrometrica Seguenza, 1877 and three new deep-sea protobranchs from the Mediterranean (Bivalvia)”, Journal of Natural History vol. 38(8), april 2004, p.1048.