eli5: Why are pterosaurs not considered dinosaurs?
In: 32
Pterosaurs and dinosaurs together make up the [Avemetatarsalia](https://en.wikipedia.org/wiki/Avemetatarsalia), which is surprisingly tricky to pronounce. Ave-metatarsal-ia. Which is just Science Latin for *birdyfeets!*
Crocodiles and alligators are not birdyfeets. Birdyfeets plus crocodilians is archosaurs.
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