They are actually closer related to mammals than to any modern reptile
Comment on xkcd #3204: Dinosaurs And Non-Dinosaurs
AmidFuror@fedia.io 9 hours ago
TIL dimetrodon is not a dinosaur, based on a silhouette in a cartoon.
I haven't really thought about dimetrodons since I was a kid.
lugal@lemmy.dbzer0.com 8 hours ago
leftzero@lemmy.dbzer0.com 7 hours ago
The name (dimetrodon ≈ two teeth sizes) is also a clue, as teeth specialization is very much a synapsid (i.e., mammal and proto-mammal) thing.
Cocodapuf@lemmy.world 3 minutes ago
That’s pretty awesome! I may have gotten old, but I never got tired of learning stuff about
dinosaursprehistoric beasts.So what’s the deal with the pterosaurs, what makes them “not dinosaurs”? I believe the really weird looking silhouette is a Quetzalcoatlus, that’s just fun to say.