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Phanerozoic marine biodiversity dynamics in light of the incompleteness of the fossil record.
Proc Natl Acad Sci U S A. 2006 Feb 21; 103(8):2736-9.PN

Abstract

Long-term evolutionary dynamics have been approached through quantitative analysis of the fossil record, but without explicitly taking its incompleteness into account. Here we explore the temporal covariance structure of per-genus origination and extinction rates for global marine fossil genera throughout the Phanerozoic, both before and after corrections for the incompleteness of the fossil record. Using uncorrected data based on Sepkoski's compendium, we find significant autocovariance within origination and extinction rates, as well as covariance between extinction and origination, not one, but two, intervals later, corroborating evidence for the unexplained temporal gap found by past studies. However, these effects vanish when the data are corrected for the incompleteness of the fossil record. Instead, we observe significant covariance only between extinction and origination in the immediately following intervals. The gap in the response of the biosphere to extinction in the uncorrected fossil record thus appears to be an artifact of the incompleteness of the fossil record, specifically due to episodic variation in the probability that taxa will be preserved, on time scales comparable to the temporal resolution of Sepkoski's data. Our results also indicate that at that temporal resolution (the stage/substage of duration approximately = 5 million years), changes in origination and extinction do not persist for longer than one interval, except that elevated origination rates immediately after extinction may last for more than a single interval. Thus, although certain individual cases may deviate from the overall pattern, we find that in general the biosphere's response to perturbation is immediate geologically and usually short-lived.

Authors+Show Affiliations

Department of Physics, Jefferson Laboratory, 17 Oxford Street, Harvard University, Cambridge, MA 02138, USA. plu@fas.harvard.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

16477008

Citation

Lu, Peter J., et al. "Phanerozoic Marine Biodiversity Dynamics in Light of the Incompleteness of the Fossil Record." Proceedings of the National Academy of Sciences of the United States of America, vol. 103, no. 8, 2006, pp. 2736-9.
Lu PJ, Yogo M, Marshall CR. Phanerozoic marine biodiversity dynamics in light of the incompleteness of the fossil record. Proc Natl Acad Sci U S A. 2006;103(8):2736-9.
Lu, P. J., Yogo, M., & Marshall, C. R. (2006). Phanerozoic marine biodiversity dynamics in light of the incompleteness of the fossil record. Proceedings of the National Academy of Sciences of the United States of America, 103(8), 2736-9.
Lu PJ, Yogo M, Marshall CR. Phanerozoic Marine Biodiversity Dynamics in Light of the Incompleteness of the Fossil Record. Proc Natl Acad Sci U S A. 2006 Feb 21;103(8):2736-9. PubMed PMID: 16477008.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phanerozoic marine biodiversity dynamics in light of the incompleteness of the fossil record. AU - Lu,Peter J, AU - Yogo,Motohiro, AU - Marshall,Charles R, Y1 - 2006/02/13/ PY - 2006/2/16/pubmed PY - 2006/6/14/medline PY - 2006/2/16/entrez SP - 2736 EP - 9 JF - Proceedings of the National Academy of Sciences of the United States of America JO - Proc Natl Acad Sci U S A VL - 103 IS - 8 N2 - Long-term evolutionary dynamics have been approached through quantitative analysis of the fossil record, but without explicitly taking its incompleteness into account. Here we explore the temporal covariance structure of per-genus origination and extinction rates for global marine fossil genera throughout the Phanerozoic, both before and after corrections for the incompleteness of the fossil record. Using uncorrected data based on Sepkoski's compendium, we find significant autocovariance within origination and extinction rates, as well as covariance between extinction and origination, not one, but two, intervals later, corroborating evidence for the unexplained temporal gap found by past studies. However, these effects vanish when the data are corrected for the incompleteness of the fossil record. Instead, we observe significant covariance only between extinction and origination in the immediately following intervals. The gap in the response of the biosphere to extinction in the uncorrected fossil record thus appears to be an artifact of the incompleteness of the fossil record, specifically due to episodic variation in the probability that taxa will be preserved, on time scales comparable to the temporal resolution of Sepkoski's data. Our results also indicate that at that temporal resolution (the stage/substage of duration approximately = 5 million years), changes in origination and extinction do not persist for longer than one interval, except that elevated origination rates immediately after extinction may last for more than a single interval. Thus, although certain individual cases may deviate from the overall pattern, we find that in general the biosphere's response to perturbation is immediate geologically and usually short-lived. SN - 0027-8424 UR - https://www.unboundmedicine.com/medline/citation/16477008/Phanerozoic_marine_biodiversity_dynamics_in_light_of_the_incompleteness_of_the_fossil_record_ L2 - http://www.pnas.org/cgi/pmidlookup?view=long&pmid=16477008 DB - PRIME DP - Unbound Medicine ER -