Talk:Saurischia

message: Considering that Dinosauria is part of the class Archosauria, shouldn't Saurischia be part of this same class instead of Reptilia? DarthVader 09:54, 17 July 2005 (UTC)
replies: text: Agreed, Class Archosauria seems to be standard across the dinosaur entries. Fixing this and the mis-spell of Aves as "Avis" in the taxobox. Dinoguy2 02:33, 9 December 2005 (UTC)

message: Is it possible to see the different types of hips reflected in external form or stance?
:The main visible difference in life would have been the size of the "gut"--the back-pointing pubis of ornithischians (and also herbivorous theropods) allowed for a longer digestive track and a longer belly. The more anterior center of gravity created by this may be why so many ornithischians were quadrupeds.Dinoguy2 23:38, 12 September 2006 (UTC)
thread_title: Visible

message: An editor have now twice put in an edit stating that birds evolved from "bird-hipped" Ornitischians. This is not correct. The term ornitischia is a reference to the other order of dinosaurs, the order that birds did not evolve from. While a similarly structured hip-bone evolved separately in the theropod family Therizinosauridae, does not make them in any way ornitischians, they are still saurischians. The typical hip-bone found in modern birds actually evolved after the early birds had evolved from maniraptoran ancestors. The whole (grade) Maniraptora had straight up lizard-like hips, and so did Archaeopteryx. So even if the terms Saurischia and Ornitischia are used as anatomical terms rather than systematic (which they never are btw), the edits that birds evolved from ornitischian dinosaurs are wrong. Petter Bøckman (talk) 05:53, 20 May 2012 (UTC)
replies: text: This is a case of confusing grammar in the article. "evolved independently from" didn't mean "independent origin than" but "from among" saurischians. I edited the paragraph to clarify things. MMartyniuk (talk) 19:13, 20 May 2012 (UTC)
replies: text: Much better now. Thanks.  — Preceding unsigned comment added by 80.187.110.110 (talk) 21:26, 20 May 2012 (UTC)
replies: text: AH, good! Only I suppose it should be "evolved trice", we must not forget the therizinosaurs. Petter Bøckman (talk) 06:29, 21 May 2012 (UTC)
thread_title: Birds evolved from ornitischians?

message: Why did you remove the Theropoda with this edit: ? --Jules (Mrjulesd) 21:50, 22 March 2017 (UTC)
replies: text: There is no such thing as an "official" change, what matters is how widely the idea is accepted in the literature. And we have no idea yet, since there have been no published reactions to it. In any case, Theropoda can't be removed from here before there is scientific consensus, and that is unlikely to happen any time soon, so we should just present the different hypotheses. FunkMonk (talk) 16:13, 31 March 2017 (UTC)
thread_title:  Why removed theropoda?  

message: At the end of the Cretaceous Period, all saurischians except the birds became extinct in the course of the Cretaceous–Paleogene extinction event.
What about the crocodiles? They are also still around.--2003:CE:BF18:60BF:310A:2384:DFE0:58EB (talk) 13:08, 15 March 2020 (UTC)
replies: text: Crocodilians are not neither saurischians nor dinosaurs. See Archosaur#Phylogeny.Kiwi Rex (talk) 14:05, 19 June 2020 (UTC)
thread_title:  Aren't crocodiles saurischians, too?