Talk:Avialae

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia

Untitled[edit]

Good work, Dinoguy2. I think that is a splendid article.

Archaeopteryx - bird or reptile?[edit]

Your wikipedia page on Archaeopteryx says this:

Archaeopteryx, sometimes referred to by its German name Urvogel ("original bird" or "first bird"), is the earliest and most primitive bird known.

Archaeopteryx was a primitive bird that lived during the Tithonian stage of the Jurassic Period, around 150–145 million years ago.

The other page states that Archaeopteryx is a bird. This page suggests that it is a theropod dinosaur.
What is Archaeopteryx? It cannot be both a reptile and a bird!
Also, this page shows Avialae as a small subsection of the class Reptilia, while the other page shows Archaeopteryx as a genus under the class Aves.
If birds are reptiles, then there is no need for a class Aves. If birds are avialans, then why mark them as separate from Avialae? Jon (talk) 10:45, 23 July 2009 (UTC)[reply]

As you can probably tell, ranks like Class and the separations between them are arbitrary. Beyond that, no valid osurce has attempted to modernize and standardize the classifications. So the distinction between bird and reptile, Avialae, etc. will be murky and self-contradictory for the foreseeable future, unfortunately. Also, birds are theropod dinosaurs, so that in itself isn't a contradiction. The fact that some theropod dinosaurs get placed in a different class from others is due to the two different classification systems in use. On, the Linnean system, draws lines between groups, so a bird can't also be a reptile. The other, the Cladistic system, doesn't draw lines. Instead, groups are nested, so Birds are dinosaurs are reptiles. Avialae exists only in the later system, Reptilia exists only in the former system, and Aves exists in both and is used in several different ways, as explained in this article. Dinoguy2 (talk) 16:43, 23 July 2009 (UTC)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just modified one external link on Avialae. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{Sourcecheck}}).

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

  • If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
  • If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 13:12, 22 October 2016 (UTC)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just modified one external link on Avialae. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

  • If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
  • If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 13:39, 12 July 2017 (UTC)[reply]

What is branch-based clade?[edit]

Most researchers define Avialae as branch-based clade

What, if anything, does that mean? —Tamfang (talk) 16:50, 27 June 2019 (UTC)[reply]

It essentially means that it is a natural grouping of organisms defined by being more closely related to one species than to another.
https://en.wikipedia.org/wiki/Phylogenetic_nomenclature Thunderhawk256 (talk) 02:01, 2 June 2023 (UTC)[reply]
Retrieved from "https://en.wikipedia.org/w/index.php?title=Talk:Avialae&oldid=1205533493"