Santa Rosa local fauna
Coordinates: 9°29′39″S 72°45′48″W / 9.49417°S 72.76333°W The Santa Rosa local fauna consists of the animals found in the Paleogene fossil site of Santa Rosa in eastern Peru. The age of the Santa Rosa fauna is difficult to determine, but may be Eocene (Mustersan) or Oligocene (Deseadan).
Few fossils have been found in the vast rainforests of the Amazon Basin, and Santa Rosa was the first Paleogene fauna to be discovered in the region. The Santa Rosa local fauna was discovered in July 1995, and the discovery was briefly reported in 1996. In 1998, further fossil samples were taken at the site. Though not all of the material had been sorted, a report on the fauna was published in 2004 in a volume edited by Kenneth Campbell of the Natural History Museum of Los Angeles County. The publication was reviewed favorably by Bruce MacFadden in the Journal of Mammalian Evolution.
The Santa Rosa fossil site is located in eastern Peru's Atalaya Province. It is about 7.0 kilometres (4.3 miles) north of the town of Breu, 7.5 kilometres (4.7 miles) south of the Brazilian border, and 2.0 kilometres (1.2 miles) north of a small village named Santa Rosa. It is on the left (west) bank of the Río Yurúa at an altitude of 215 metres (705 feet). The fossils were found in coarse fluvial deposits that form thin lenses along the bank of the river.
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