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The entire text of the version I propose follows. Because it is so
different from the current wording, I have not marked additions and
deletions, except where I propose to delete entire paragraphs.<br>
<br>
=================================<br>
<br>
<i>Note 9.3.1.</i> The definition of "clade" is "an ancestor (an
organism, population, or species) and all of its descendants" (Art.
2.1). Building on this definition, clade names can be defined by
pointing at such an ancestor, creating a phylogenetic definition.
This can be done in different ways, such as the following:<br>
<ul>
<li>The ancestor can be mentioned directly in an ancestor-based
definition: "A and all its descendants", where A is a specific
organism, population, or species.</li>
<li>Usually, however, the intended ancestor is not directly known.
Thus, the ancestor can be indicated by its relation to two or
more specifiers (Art. 11) that are mentioned directly:</li>
<ul>
<li>A minimum-clade definition [note the hyphen which makes
clear that the clade, not the definition, is a minimum] may
take the form [...]</li>
<li>A maximum-clade definition may take the form [...]</li>
<li>An apomorphy-based definition may take the form [...]</li>
</ul>
<li>The ancestor can be indicated by its relation to two or more
specifiers that are not mentioned directly, but described as
members of another clade that fulfill certain criteria. Such
definitions may first describe an unnamed clade and then use its
extant members (or those fulfilling another criterion) as
specifiers for a minimum-clade definition:</li>
<ul>
<li>A maximum-modified crown clade definition [note the addition
of "-modified" to avoid confusion because crown clades are
minimum clades] may take the form [...]</li>
<li>An apomorphy-modified crown clade definition may take the
form [...]</li>
</ul>
<li>A crown clade in its entirety, mentioned by name, can be the
internal specifier in the definition of the name of a total
clade under the conditions specified in Art. 10.5. [This fact
contradicts a claim in Note 11.1.2.]<br>
</li>
</ul>
[deletion of the two paragraphs that follow this list in the
proposal we're currently discussing]<br>
<br>
The above list is not exhaustive. Most importantly, definitions may
contain qualifying clauses that restrict their applications to
specific phylogenetic hypotheses (Art. 11.9).<br>
<br>
The system of abbreviations used here [...]<br>
<br>
For abbreviations involving qualifying clauses, see Note 11.9.1.<br>
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