Technically, being needlessly-pedantic, pterosaurs were not dinosaurs, but I'll allow it. If you buy one of those packs of plastic "dinosaurs" from the dollar store, 100% chance it comes with a pterodactyl. And a dimetrodon, which is also not a dinosaur, but I'm not bitter.Pterodactyl
Definitely a classic, and it's one of the cooler names for an extinct animal. The silent 'P' on the front adds to the experience, making it look like the name of some alien death god. It's almost disappointing that it just means "wing finger".
Seriously, you almost can't find a multi-species dinosaur illustration without some pterodactyls hanging around. Wouldn't be right. Such a classic. 9/10