Homotrema Hickson 1911

Homotrema is a genus of foraminifers belonging to the family Homotrematidae.

The species of this genus are found in subtropical and tropical regions.

Species:

Homotrema hemispherica McCulloch, 1977 Homotrema pacifica McCulloch, 1977 Homotrema rubra (Lamarck, 1816) Homotrema singaporensis McCulloch, 1977

Test large, up to 8 mm in diameter, attached, variable in form, globose, hemispherical, or encrusting with conical projections or erect branches, _early chambers in spiral or clustered arrangement, later in numerous layers, walls may be partially resorbed as layers are added, producing large and irregular passages; wall calcareous, hyaline, optically radial, early chambers with organic wall, later wholly calcareous, intercameral walls imperforate, septa elevated at the surface, upper chamber wall coarsely perforate, commonly red in color, probably as a result of partial decomposition of chlorophyll pigments of endosymbionts; aperture consisting of the large perforations. Miocene to Holocene; cosmopolitan in warm waters. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)