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Periodic extinction of families and genera.
Science. 1986 Feb 21; 231:833-6.Sci

Abstract

Eight major episodes of biological extinction of marine families over the past 250 million years stand significantly above local background (P < 0.05). These events are more pronounced when analyzed at the level of genus, and generic data exhibit additional apparent extinction events in the Aptian (Cretaceous) and Pliocene (Tertiary) Stages. Time-series analysis of these records strongly suggests a 26-million-year periodicity. This conclusion is robust even when adjusted for simultaneous testing of many trial periods. When the time series is limited to the four best-dated events (Cenomanian, Maestrichtian, upper Eocene, and middle Miocene), the hypothesis of randomness is also rejected for the 26-million-year period (P < 0.0002).

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Publisher Full Text

Authors+Show Affiliations

Raup DM
Department of Geophysical Sciences, University of Chicago, IL 60637, USA.
Sepkoski JJ
No affiliation info available

MeSH

AnimalsBiological EvolutionFossilsGeological PhenomenaGeologyMarine BiologyPaleontologyPeriodicity

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

11542060

Citation

Raup, D M., and J J. Sepkoski. "Periodic Extinction of Families and Genera." Science (New York, N.Y.), vol. 231, 1986, pp. 833-6.
Raup DM, Sepkoski JJ. Periodic extinction of families and genera. Science. 1986;231:833-6.
Raup, D. M., & Sepkoski, J. J. (1986). Periodic extinction of families and genera. Science (New York, N.Y.), 231, 833-6.
Raup DM, Sepkoski JJ. Periodic Extinction of Families and Genera. Science. 1986 Feb 21;231:833-6. PubMed PMID: 11542060.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Periodic extinction of families and genera. AU - Raup,D M, AU - Sepkoski,J J,Jr PY - 1986/2/21/pubmed PY - 2001/9/11/medline PY - 1986/2/21/entrez KW - NASA Discipline Exobiology KW - Non-NASA Center SP - 833 EP - 6 JF - Science (New York, N.Y.) JO - Science VL - 231 N2 - Eight major episodes of biological extinction of marine families over the past 250 million years stand significantly above local background (P < 0.05). These events are more pronounced when analyzed at the level of genus, and generic data exhibit additional apparent extinction events in the Aptian (Cretaceous) and Pliocene (Tertiary) Stages. Time-series analysis of these records strongly suggests a 26-million-year periodicity. This conclusion is robust even when adjusted for simultaneous testing of many trial periods. When the time series is limited to the four best-dated events (Cenomanian, Maestrichtian, upper Eocene, and middle Miocene), the hypothesis of randomness is also rejected for the 26-million-year period (P < 0.0002). SN - 0036-8075 UR - https://www.unboundmedicine.com/medline/citation/11542060/Periodic_extinction_of_families_and_genera_ L2 - https:///www.science.org/doi/10.1126/science.11542060?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -