Fijinonion Hornibrook 1964

Fijinonion es un género de foraminífero bentónico de la subfamilia Astrononioninae, de la familia Nonionidae, de la superfamilia Nonionoidea, del suborden Rotaliina​ y del orden Rotaliida.​ Su especie tipo es Astrononion fijiensis. Su rango cronoestratigráfico abarca desde el Mioceno hasta la Actualidad.

Test relatively large, planispiral, and involute, moderately compressed, biumbilicate, chambers numerous, each with a large arched triangular apertural plate arising at the umbilical end of the apertural lip, those of successive chambers fused along their borders into a tube that opens at the outer margin, sutures thickened, curved, nearly flush, periphery rounded; wall calcareous, hyaline, optically granular, finely perforate; aperture a low interiomarginal, equatorial slit, extending laterally to the umbilici and bordered by a narrow lip. L. Miocene to Holocene; Fiji; New Zealand. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)