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Science 26 February 1999:
Vol. 283. no. 5406, pp. 1310 - 1314
DOI: 10.1126/science.283.5406.1310
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Reports
Evolutionary and Preservational Constraints on Origins of Biologic Groups: Divergence Times of Eutherian Mammals
Mike Foote,
1*
John P. Hunter,
2
Christine M. Janis,
3
J. John Sepkoski
Jr.
1
Some molecular clock estimates of divergence times of taxonomic
groups undergoing evolutionary radiation are much older than the
groups' first observed fossil record. Mathematical models of branching
evolution are used to estimate the maximal rate of fossil preservation
consistent with a postulated missing history, given the sum of species
durations implied by early origins under a range of species origination
and extinction rates. The plausibility of postulated divergence times
depends on origination, extinction, and preservation rates estimated
from the fossil record. For eutherian mammals, this approach suggests
that it is unlikely that many modern orders arose much earlier than
their oldest fossil records.
1 Department of the Geophysical Sciences,
University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637, USA.
2 New York College of Osteopathic Medicine of New
York Institute of Technology, Post Office Box 8000, Old Westbury, NY
11568-8000, USA.
3 Department of Ecology and
Evolutionary Biology, Brown University, Providence, RI 02912, USA.
*
To whom correspondence should be addressed. E-mail:
mfoote{at}midway.uchicago.edu
Read the Full Text
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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J. Hered.
92, 212-219
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- Estimation of divergence times from multiprotein sequences for a few mammalian species and several distantly related organisms.
- M. Nei, P. Xu, and G. Glazko (2001)
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- Likelihood tests of hypothesized durations: determining and accommodating biasing factors.
- (2000)
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- The Promise of Comparative Genomics in Mammals.
- S. J. O'Brien, M. Menotti-Raymond, W. J. Murphy, W. G. Nash, J. Wienberg, R. Stanyon, N. G. Copeland, N. A. Jenkins, J. E. Womack, and J. A. Marshall Graves (1999)
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286, 458-481
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- Proposal for a standardized temporal scheme of biological classification for extant species.
- J. C. Avise and G. C. Johns (1999)
PNAS
96, 7358-7363
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