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Yoyoism (was Re: Endothermic Crocs in Nature)
"Tim Williams" <email@example.com> writes:
For example, I know of no "neoflightless" insects, nor
Many phasmids (stick insects) appear to be neoflightless, and secondary
flightedness has apparently evolved independently in four distinct phasmid
groups since this initial neoflightless event. In fact, a couple of phasmid
clades apparently lost their wings, regained their wings, and lost their
wings yet again. But don't take my word for it -- read the paper for
Figure 3 is particularly fun.
I hereby coin the term "yoyoism" to describe this aspect of numerous
reversals of a particular character within a lineage.
"Dino Guy" Ralph W. Miller III
Docent at the California Academy of Sciences
proud member of the Society of Vertebrate Paleontology