Abstract:
:The late Pleistocene witnessed the extinction of 35 genera of North American mammals. The last appearance dates of 16 of these genera securely fall between 12,000 and 10,000 radiocarbon years ago (approximately 13,800-11,400 calendar years B.P.), although whether the absence of fossil occurrences for the remaining 19 genera from this time interval is the result of sampling error or temporally staggered extinctions is unclear. Analysis of the chronology of extinctions suggests that sampling error can explain the absence of terminal Pleistocene last appearance dates for the remaining 19 genera. The extinction chronology of North American Pleistocene mammals therefore can be characterized as a synchronous event that took place 12,000-10,000 radiocarbon years B.P. Results favor an extinction mechanism that is capable of wiping out up to 35 genera across a continent in a geologic instant.
journal_name
Proc Natl Acad Sci U S Aauthors
Faith JT,Surovell TAdoi
10.1073/pnas.0908153106subject
Has Abstractpub_date
2009-12-08 00:00:00pages
20641-5issue
49eissn
0027-8424issn
1091-6490pii
0908153106journal_volume
106pub_type
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