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Hi dear dino-list members,
First thanks to HP's Ken Kinman and Thomas R. Holtz
Jr.'s replies.
Another question:
monophyletic: is it told about a group which is
derived from a common basal species?
polyphyletic: is it told about a group which
contains species sharing common features but which may derive from different
basal species?
And what means paraphyletic?
Many thanks in advance, friendly -
LJB.
ps: maybe I'm not clear; and excuse my bad
English.
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