Playing catch-up. These are an attempt at some pwoermds around the same theme . . .

treyelobeyetes
(though some didn't have eyes, many had complex eyes; they all had three-lobed bodies, and as a group enjoyed a modest 270 million year run)

flowurge
(a pair intimately linked by way of the Cretaceous)
flyower

tdheiecrket
(sort of a trees versus forest pair)
trdeers

inginjuniperis

troadskill

apwas-s-s-per!

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Many more here:

International Pwoermd Writing Month