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Mustersan
The Mustersan age is a period of geologic time (48.0–42.0 Mya (unit), Ma) within the Eocene epoch of the Paleogene, used more specifically within the South American land mammal age (SALMA) classification. It follows the Casamayoran and precedes the Divisaderan age.Mustersan at Fossilworks.orgWoodburne et al., 2013 Etymology This age is named after Lake Musters in the Golfo San Jorge Basin.Formations Fossils See also * Lake MustersReferences Bibliography ;General * ;Sarmiento Formation * * * * * * ;Abanico Formation * * * * * * ;Andesitas Huancache Formation * * ;Chota Formation * ;Geste Formation * * * ; ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South American Land Mammal Age
The South American land mammal ages (SALMA) establish a geologic timescale for prehistoric South American fauna beginning 64.5 Ma during the Paleocene and continuing through to the Late Pleistocene (0.011 Ma). These periods are referred to as ages, stages, or intervals and were established using geographic place names where fossil materials where obtained.Flynn & Swisher, 1995 The basic unit of measurement is the first/last boundary statement. This shows that the first appearance event of one taxon is known to predate the last appearance event of another. If two taxa are found in the same fossil quarry or at the same stratigraphic horizon, then their age-range zones overlap. Background South America was an island continent for much of the Cenozoic, or the "Age of Mammals". As a result, its mammals evolved in their own unique directions, as Australia and Madagascar still have today. Paleogeographic timeline A simplified paleogeographic timeline of South America: * 66 Ma – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Rosa Local Fauna
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). History and context 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''. Location and geology The Santa Rosa fossil site is located in eastern Peru's Atalaya Province. It is about north of the town of Breu, south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
