P. robustus may refer to: Paranthropus robustus, an extinct hominin species dated to have lived between 2.0 and 1.2 million years ago Paraptenodytes robustus, an extinct penguin species found in Early Miocene rocks of the Patagonian Molasse Formation Poicephalus robustus, the cape parrot, a parrot species Psilorhynchus robustus, an Asian freshwater fish species found in Burma Synonyms Ptychostomus robustus, a synonym for Moxostoma robustum, the robust redhorse or smallfin redhorse, a freshwater fish species of the eastern United States See also Robustus (disambiguation)