| MassExtinctions {abd} | R Documentation |
Mass Extinction Frequency
Description
The frequency of mass extinctions in the fossil record.
Format
A data frame with 21 observations on the following 2 variables.
- num.extinctions
a numeric vector
- count
a numeric vector
Source
Raup, D.M. and J.J. Sepkoski, Jr. 1982. Mass extinctions in the marine fossil record. Science 215: 1501-1503.
References
http://www.sciencemag.org/cgi/content/abstract/sci;215/4539/1501
Examples
MassExtinctions
[Package abd version 0.2-8 Index]