\name{richness.yule.test}
\alias{richness.yule.test}
-\title{}
+\title{Test of Diversification-Shift With the Yule Process}
\description{
This function performs a test of shift in diversification rate using
probabilities from the Yule process.
\item{t}{a numeric vector giving the divergence times of each pair of
clades in \code{x}.}
}
-\details{
-}
\value{
a data frame with the \eqn{\chi^2}{chi2}, the number of degrees of
freedom (= 1), and the \emph{P}-value.