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From Wikipedia: > Birds are feathered theropod dinosaurs and constitute the only known living dinosaurs. https://en.wikipedia.org/wiki/Bird https://en.wikiped
by zmgsabst 3y ago
From Wikipedia:
> Birds are feathered theropod dinosaurs and constitute the only known living dinosaurs.
https://en.wikipedia.org/wiki/Bird https://en.wikipedia.org/wiki/Bird
Bird are in the dinosaur clade, ie the biological group defined by the dinosaur family.
Birds are dinosaurs in the same way that humans are mammals.
- badcppdev 3y agoI'm not going to argue with your clear reference but I will reference this article: https://askabiologist.asu.edu/questions/birds-dinosaurs-reptiles https://askabiologist.asu.edu/questions/birds-dinosaurs-rept... which adds a bit of useful context. "So a reptile is any animal descended from the original group called reptiles. Both birds and mammals share ancestors sometimes referred to as reptile-like animals (Reptiliomorpha), but it's not very common for people to talk about mammals as reptiles."
- zmgsabst 3y agoThat’s because mammals aren’t reptiles: Mammals are from Synapsids[0] and dinosaurs (and modern reptiles) are from Sauropsida[1] — with the commonality being that amphibians split off first [2]. We can draw disjoint clades, which we cannot do for birds and dinosaurs. Beyond that, you’re just talking about tetrapods in general [3]. Reptiliomorpha has multiple names, precisely due to this — eg, pan-amniota. 0 - https://en.wikipedia.org/wiki/Synapsid https://en.wikipedia.org/wiki/Synapsid 1 - https://en.wikipedia.org/wiki/Sauropsida https://en.wikipedia.org/wiki/Sauropsida 2 - https://en.wikipedia.org/wiki/Amniote https://en.wikipedia.org/wiki/Amniote 3 - https://en.wikipedia.org/wiki/Tetrapod https://en.wikipedia.org/wiki/Tetrapod