Description Usage Arguments Details Value Author(s) References See Also

Esimate speciation rates under any relative extinction rate, given a crown or stem group age and a number of extant species

1 2 3 4 | ```
lambda.crown.ms01(n, tb, eps=0)
lambda.stem.ms01(n, tb, eps=0)
lambda.stem.ml(n, tb, eps=0)
lambda.stem.ci(tb, r, eps=0)
``` |

`n` |
the number of extant species in a clade |

`tb` |
the stem or crown group age |

`eps` |
the relative extinction rate, or |

`r` |
the net diversification rate, r ( |

`lambda.crown.ms01`

estimates speciation rates assuming some value of `eps`

and a crown group age after Magallon & Sanderson (2001), eqn A7.

`lambda.stem.ms01`

estimates speciation rates assuming a known stem clade age. Same as eqn A6 in Magallon & Sanderson 2001.

`lambda.stem.ml`

finds maximum likelihood estimate of speciation rate given stem age and `eps`

. This is given in Magallon & Sanderson (2001), eqns 1-2, Raup (1985) eqn A18, and others.

`lambda.stem.ci`

gives 95 percent confidence intervals on expected species diversity after `tb`

time units given net diversification rate `r`

and `eps`

a list with the following components (for speciation rate estimators)

`lambda` |
the estimated speciation rate |

`r` |
the net diversification rate |

or, for `lambda.stem.ci`

`upper` |
upper bound of 95 percent confidence interval on expected species diversity |

`lower` |
lower bound of 95 percent confidence interval on expected diversity |

Dan Rabosky drabosky@umich.edu.edu

Magallon, S., and M. J. Sanderson. 2001. Absolute diversification rates in angiosperm clades. Evolution 55:1762-1780.

Raup, D. M. 1985. Mathematical models of cladogenesis. Paleobiology 11:42-52.

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