Palaeospheniscus is an extinct genus of penguins which contains three species at present. They are all (except P. bergi, which is somewhat enigmatic) known from one or two handful of bones. All specimens were found in Santa Cruz and Chubut Provinces of Patagonia, Argentina. The fossils were recovered from the Patagonian Molasse Formation, and are probably Early Miocene to Late Miocene or possibly Early Pliocene in age (Stucchi et al. 2003). Palaeospheniscus gracilis was long believed to be from… (More on Palaeospheniscus)