This function plots Sepkoski's evolutionary fauna (Sepkoski, 1981), using the Sepkoski (2002) fossil marine animal genera compendium (i.e. the included sepkoski dataset). No changes have been made to any taxonomic names in this dataset. However, first and last appearance intervals have been updated to stages from the International Geological Time Scale 2022. As such, minor differences may be observed to previously published plots.
Usage
sepkoski_curve(
title = NULL,
height = 0.05,
cols = NULL,
int_lab = TRUE,
int_size = 1,
fill = FALSE,
legend = TRUE,
legend_size = 1
)
Arguments
- title
character
. Title of the plot. Defaults toNULL
.- height
numeric
. Height of the Geological Time Scale relative to the plot area. Defaults to 0.05.- cols
character
. The colours of the polygons in the plot area.- int_lab
logical
. Should interval labels be added? Defaults to TRUE.- int_size
numeric
. The size of the interval labels. Defaults to 1.- fill
logical
. Should interval boxes be plotted with the ICS colour scheme? Defaults toFALSE
.- legend
logical
. Should a legend be added to the plot? Defaults toTRUE
.- legend_size
numeric
. The size of the legend. Defaults to 1.
Details
Taxa are assigned to evolutionary fauna (EF) categories as follows:
Cambrian EF: Trilobita, Polychaeta, Tergomya ("Monoplacophora"), Inarticulata, and Hyolithomorpha.
Paleozoic EF: Anthozoa, Articulata, Asteroidea, Cephalopoda, Crinoidea, Ostracoda, Ophiuroidea, Somasteroidea, and Stenolaemata.
Modern EF: Bivalvia, Chondrichthyes, Demospongia, Echinoidea, Gastropoda, Gymnolaemata, Malacostraca, and Osteichthyes.