[DOWNLOAD] "Decapod Crustaceans from the Puente Formation (Late Middle to Early Late Miocene), California: A Possible Mass Death." by Bulletin (Southern California Academy of Sciences) # Book PDF Kindle ePub Free
eBook details
- Title: Decapod Crustaceans from the Puente Formation (Late Middle to Early Late Miocene), California: A Possible Mass Death.
- Author : Bulletin (Southern California Academy of Sciences)
- Release Date : January 01, 2003
- Genre: Engineering,Books,Professional & Technical,
- Pages : * pages
- Size : 208 KB
Description
Abstract.--Decapod crustaceans are reported for the first time from the late middle to early late Miocene Puente Formation, Riverside County, California. A single specimen of penaeid shrimp and numerous cancrid crabs, referred to Metacarcinus danai Nations, were collected in association with a mixed assemblage of terrestrial plants, a few bivalves, marine mammals, and numerous taxa of microfossils. Living species of Metacarcinus are found in temperate, normal-marine conditions in water depths up to about 100 m. Thus, an inner shelf, shallow-water environment of deposition is postulated for this part of the Puente Formation. The accumulation of many articulated fossils suggests rapid killing and burial of many individuals, suggestive of a mass death. Thirteen samples of siltstone bearing fossil decapod crustaceans from the Miocene Puente Formation, Riverside County, California, form the basis for this study. The samples were examined in the context of the Eagle Glen paleontologic resource impact mitigation program conducted by Paleo Environmental Associates, Inc., and L & L Environmental, Inc., during grading associated with development of the Corona Country Club Estates in the city of Corona, California (Lander 2002). The fossils have been identified, and their biostratigraphic and paleoecologic significance has been evaluated. It appears that the fossils accumulated in a nearshore, marine environment, possibly as a result of a mass-mortality event.
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