Ornithocercus heteroporus is a species of dinoflagellates in the family Dinophysiaceae. They are native to Bahia, Espirito Santo, Santa Catarina, SãO Paulo, Rio Grande Do Sul, and Paraná.
Definition: Living in the fluid medium (water or air) but unable to maintain their position or distribution independently of the movement of the water/air mass (adapted from Lincoln et al., 1998).