Abstract
The present work presents the first occurrence of seabirdsʼ fossils from pleistocenic fossiliferous deposits submerged along the inner continental shelf of Rio Grande do Sul state. The fossils presented here were collected during field works between 1999 and 2003 and consist of three cervical vertebrae and a partial left tibiotarsus. The fossilsʼ morphology and size are similar to those of a procellariiform seabird of the Thalassarche melanophrys Temminck 1828 species (black-browed mollymawk). The fossils are well-preserved, indicating that were not subject to significant re-working during transport from the source areas to the beach. This suggests that the submerged deposits are located near the present shoreline.
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