Talk:Class (biology)

Expansion

In comparison to the other taxonomy articles, I think tihs one is the odd-man out. It's more like a dictionary definition than an encyclopedia article. To be clear though, I think it needs expansion more than deletion. FrozenPurpleCube 18:58, 27 November 2006 (UTC)

Sure, it needs, at the very least, an historical section comparable to that in the articles about family and order (not sure if they're still present, there's a lot of changes since my last visit in August). Alexei Kouprianov 11:21, 30 November 2006 (UTC)

Well, I added a brief primer for a historical section. Fabricius is to be mentioned too, as an example of early unconvetional usage in his classification of "Insects", but for now I retreat to check with the sources. Alexei Kouprianov 11:12, 3 December 2006 (UTC)

Infraclass

The word "Infraclass" redirects here.
There is also a page for "Infraclass (Zoology)".
I'm not sure if "Infraclass" should redirect there, or if perhaps an "Infraclass (disambiguation)" page is called for. I'm not much of a biology expert, I just wanted to point out the issue.
Blueguy76 22:32, 9 October 2007 (UTC)

Classes

Is there a list of all the Classes with average-bio-person definitions next to it (e.g. mammals, insects, reptiles etc...)

The article does not help in any way and it has been like that for a big while, hope it expands

I wish I can expand it but it is not my field —Preceding unsigned comment added by 41.196.69.71 (talk) 23:04, 24 April 2008 (UTC)

--- Going through Phylum made me regret adding that section, sorry :D —Preceding unsigned comment added by 41.196.69.71 (talk) 23:07, 24 April 2008 (UTC)

I would also like to see an expansion. Hopefully someone can put up some relative information soon.--DavidD4scnrt (talk) 20:22, 27 April 2008 (UTC)

The number of classes varies from classification to classification - there is no definite list. For example, some biologists consider all fish to make up a single class, called Pisces, while some divide them into half a dozen or more smaller classes, such as Actinopterygii (ray-finned fish), Sarcopterygii (lobe-finned fish), Chondrichthyes (sharks, rays, and chimaeras), Placodermi (extinct armoured fish), Acanthodii (extinct spiny fish), Ostracodermi (extinct armoured jawless fish), Hyperoartia (lampreys), and Myxini (hagfish). This is a somwhat extreme example, but similar differences bedevil classification in many parts of the tree of life: listing everything anyone has called a class would produce a humongous list rife with inconsistency (listing all of Class Pisces, Class Chondrichthyes, and Class Selachii, where each "class" is contained in the previous), and chosing any specific classification would be arbitrary. Orcoteuthis (talk) 23:20, 3 December 2008 (UTC)

It would be worth explaining the above in the article. —Pengo 20:58, 17 March 2009 (UTC)

Is "Class" still a useful / meaningful concept?

Class Aves is a member of suborder Theropoda, which is a member of another class (Reptilia/Sauropsida), which is within superclass Tetrapoda, within is in Class Sarcopterygii.

Given all this jumping about from class to suborder to class to superclass and back to class again, as you go "up" the heirarchy, is to concept of "class" actually useful or meaningful any more? Wardog (talk) 14:14, 16 January 2009 (UTC)

I'm not sure about "useful", but you see this kind of thing a lot depending on whether people are talking about clades or not. It's not just class - another example is the order carnivora being "within" the family miacid. When considering clades, I think this idea of *levels* of taxa (kingdom > phylum > class > order > family ...) becomes less useful. Clades are clades. So instead you'd say Sarcopterygii > Tetrapoda > Sauropsida > Theropoda > Aves. But if you don't want to think about clades, and instead are just concerned with features like warm-blooded and feathers, then thinking of Aves as a class on the same level as Sarcopterygii makes sense. In other words, from a features/diversity/non-clade/etc perspective, sarcopterygii and aves are on the same level. From a clade perspective, sarcopterygii is way bigger than aves. I think it's kind of odd to think of sarcopterygii (or reptile or miacid) as a clade, since "lobed fin fish" is not a clade. ErikHaugen (talk) 22:07, 13 March 2009 (UTC)

Parvclass

Parvclass redirects to Class (biology), but is not mentioned in the article. —Pengo 20:57, 17 March 2009 (UTC)

It's in that box at the bottom. Is it clear from there that it's a rank below infraclass? If not, work it in :) ErikHaugen (talk) 21:18, 17 March 2009 (UTC)

Merge infraclass into this page

There's almost nothing on the infraclass (zoology) page that isn't here, so I'd propose a merger. All the other kinds of classes redirect to this page (class (biology)). MichaK (talk) 12:28, 3 December 2010 (UTC)

Absolutely. Do it. --Stemonitis (talk) 16:35, 3 December 2010 (UTC)

Done. MichaK (talk) 14:45, 6 December 2010 (UTC)

Ngeli (sw)

Habari najaribu kuunganisha kiungo cha makala ya Ngeli katika makala ya Class (biology) lakini inaonesha sina ruhusa ya kufanya hivyo. Naomba msaada wa kuunganisha makala hizi. ahsante. Czeus25 Masele (talk) 11:42, 25 February 2020 (UTC)

I would like someone with the permission to link this page Ngeli from Swahili Wikipedia to Class (biology) — Preceding unsigned comment added by Czeus25 Masele (talk • contribs) 11:44, 25 February 2020 (UTC)

Definition of class

Definition of class 223.228.34.253 (talk) 15:13, 1 July 2022 (UTC)