Tim Williams wrote:
If this character (forked vs non-forked ischium) is not taxonomically significant AND it's the ONLY character used to distinguish _Archaeopteryx_ from _Shenzhouraptor_.... then yes, we would synonymize the two.<
What is your test for determining if a character is taxonomically significant? Wouldn't its significance only be determined after putting the character into a cladistic analysis? How do you make the determination yourself? Rob