The northern sector of the Rio Grande do Sul Coastal Plain, southern Brazil, preserves a detailed record of Quaternary sea-level changes and coastal processes. In this study, 54 geosites were identified and characterized across 18 municipalities, including lagoon-barrier systems, dune fields, coastal ridges, abrasion caves, testimony hills, lagoons, spits, deltas, and shell mounds. These sites document the geological evolution...

An expedition to the middle Rio Purus basin uncovered a remarkable new species of the genus Spinipterus . The new species has a very distinct and conspicuous colour pattern resembling a jaguar and it is almost four times larger than Spinipterus acsi , a small specimen (32 mm L S ) from Caño Santa Rita, a right bank tributary of Río Nanay in Peru and a second specimen was reported from Rio Juruá, Amazonas State, Brazil. Althoug...