Ornithocercus thumii is a species of Dinophyceae in the family Dinophysiaceae. They are native to Rio De Janeiro, Bahia, Rio Grande Do Sul, Espirito Santo, Rio Grande Do Norte, and SãO Paulo.

EOL has data for 14 attributes, including:

Known occurrences, collected specimens and observations of Ornithocercus thumii. View this species on GBIF