I WONDER - Were Pterodactyls Dinosaurs?

The video explains that while pterodactyls are often thought of as flying dinosaurs, they are actually classified as winged lizards. This distinction is due to the way scientists classify animals, noting that dinosaur limbs are positioned under their bodies, whereas pterodactyl limbs extend from the sides.

What are pterodactyls described as in the text?

What classification do scientists use for animals and species?