More taxo-computational distractions
ascheltema at WHOI.EDU
Wed Dec 3 10:09:30 CST 1997
Some thoughts on some seeming windows on the past:
Limulus, the horshoe crab with a long fossil record
Neopilina, the pseudometameric monoplacophoran mollusk--the
Triblidiacea have also a long fossil record
Aren't there some insects?
If we consider the start of life on this planet: All
characters are apomorphic at some level. All characters are
plesiomorphic at some level.
The two terms are useful only in reference to the choice
of outgroup (sister group).
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