HCD {MCPAN}R Documentation

Hell Creek Dinosaur Data

Description

Counts of dinosaur families found in three stratigraphic levels of the Cretaceous period in the Hell Creek formation in North Dakota. The eight families are the Ceratopsidae (Ce), Hadrosauridae (Ha), Hypsilophodontidae (Hy), Pachycephalosauridae (Pa), Tyrannosauridae (Ty), Ornithomimidae (Or), Sauronithoididae (Sa) and Dromiaeosauridae (Dr).

Usage

data(HCD)

Format

A data frame with 3 observations on the following 9 variables.

Level
a factor with levels Lower Middle Upper, specifiyng the stratigraphic levels
Cr
a numeric vector, counts of the Ceratopsidae
Ha
a numeric vector, counts of the Hadrosauridae
Hy
a numeric vector, counts of the Hypsilophodontidae
Pa
a numeric vector, counts of the Pachycephalosauridae
Ty
a numeric vector, counts of the Tyrannosauridae
Or
a numeric vector, counts of the Ornithomimidae
Sa
a numeric vector, counts of the Sauronithoididae
Dr
a numeric vector, counts of the Dromiaeosauridae

Source

Table 1 in: Rogers, JA and Hsu, JC (2001): Multiple Comparisons of Biodiversity. Biometrical Journal 43, 617-625.

References

Sheehan, P.M., et al. (1991): Sudden extinction of the Dinosaurs: Latest Cretaceous, Upper Great Plains, U.S.A. Science 254, 835-839.

Examples


data(HCD)
str(HCD)
HCD

mat<-as.matrix(HCD[,-c(1)])

rownames(mat)<-HCD$Level

mosaicplot(mat, las=1)

estSimpsonf(X=HCD[,-c(1)], f=HCD$Level)

estShannonf(X=HCD[,-c(1)], f=HCD$Level)


[Package MCPAN version 1.1-7 Index]