This article is within the scope of WikiProject Anatomy, a collaborative effort to improve the coverage of Anatomy on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
This article has been rated as Mid-importance on the project's importance scale.
This article is far too cursory. The choana is an important organ in the evolution of vertebrate structure and it needs to be considered from the perspective of a paleoichthyologist, of which there aren't many who have time to post on here probably. An expert on crossopterygian fishes would be a good person to write an entry.
Study the literature on crossopts and you will have a good introduction to the choana. Crossopts are "lobe-finned" fishes that were abundant in the Devonian. Lobe-finned fishes are also classified as Sarcopterygii. Another lobe-finned fish that is well-known is the "living fossil" Coelacanth, Latimeria sp. Coelacanths do not have choanae, but crossopterygians and dipnoans do, although they have a different embryologic pattern so it's not clear how the choana is related in all the groups. One thing seems to be fairly consistent in the literature: the tetrapod choana has its origin in the Sarcopterygii. Other anatomical characteristics link tetrapods within the more restrictive category Crossopterygii. —Preceding unsigned comment added by 18.104.22.168 (talk) 03:11, 14 February 2009 (UTC)
Is this supposed to be just about the human anatomy? I'm not good with formatting, but if someone separated this into articles I could help more.Drchazz (talk) 00:55, 29 January 2009 (UTC)
Is it possible to highlight on the main image which space this article refers to? The labels don't seem very useful. Also, an image or diagram (in the relevant subsection) of the counterparts in fish would be helpful too. Cesiumfrog (talk) 00:31, 31 October 2011 (UTC)