Jaime Headden wrote-
<However, I have issues with which clades are presented as "active". It's
basically the clades Sereno uses. So Tyrannoraptora is active, despite having
an uncertain content (does it include compsognathids? Ornitholestes?
arctometatarsalians?)>
This may not be of any relevance on the issue of active versus non-active.
Sereno, P. C. 2005. The logical basis of phylogenetic taxonomy. _Systematic Biology_ 54:595-619.
Mickey Mortimer