Siphonidia Seiglie 1965

Siphonidia es un género de foraminífero bentónico de la familia Pegidiidae, de la superfamilia Discorboidea, del suborden Rotaliina​ y del orden Rotaliida.​ Su especie tipo es Siphonidia aurantiata. Su rango cronoestratigráfico abarca el Holoceno.

Test small, up to 0.2 mm in diameter, globose, trochospiral or possibly streptospiral, with few chambers, rapidly increasing in size and strongly overlapping, sutures slightly depressed; wall calcareous, perforate, optically radial, surface smooth; aperture multiple, of a few large rounded pores bordered by a prominent lip, generally covered by an irregular bullalike structure that has infralaminal openings. Holocene; Caribbean: off Venezuela. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)