Editing Incertae sedis (section)

===Poor description===
This excerpt from a 2007 [[Academic publishing|scientific paper]] about [[crustacean]]s of the [[Kuril–Kamchatka Trench]] and the [[Japan Trench]] describes typical circumstances through which this category is applied in discussing:<ref>{{cite journal |author=Graham J. Bird |date=2007  |journal=[[Zootaxa]] |volume=1599 |pages=121–149 |url=http://www.mapress.com/zootaxa/2007f/zt01599p149.pdf  |title=Family ''incertae cedis''|doi=10.11646/zootaxa.1599.1.8}}</ref>
<blockquote>...the removal of many genera from new and existing families into a state of incertae sedis. Their reduced status was attributed largely to poor or inadequate descriptions but it was accepted that some of the vagueness in the analysis was due to insufficient character states. It is also evident that a proportion of the characters used in the analysis, or their given states for particular taxa, were inappropriate or invalid. Additional complexity, and factors that have misled earlier authorities, are intrusion by extensive [[homoplasies]], apparent character state reversals and [[convergent evolution]].</blockquote>