Diversification rate shifts in Amoebozoa based on an 18S rDNA chronogram.

<p>The tree shown was derived and dated using BEAST [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0074374#B35" target="_blank">35</a>] with the HKY substitution model. Colored branches indicate significant rate shifts detected by the birth-death model of MEDUSA [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0074374#B37" target="_blank">37</a>]: red branches, green triangle (arcellinids) and blue triangle (Myxogastria) indicate faster rates and an orange branch indicates a single terminal clade with slower rates (<i>Acanthamoeba</i>). Alternative coding of the number of species for each terminal is indicated with a slash (see section 2.2). Violet vertical bar indicates the time span between the initial colonization of land by plants to the origin of the terrestrial ecosystems [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0074374#B50" target="_blank">50</a>]. Bootstrap support (BS) values obtained from a maximum likelihood analysis using RAxML v 7.04 [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0074374#B27" target="_blank">27</a>] are indicated by black circles (BS>95%), black squares (BS>75) black triangles (BS>50).