#3204: Dinosaurs And Non-Dinosaurs

XKCD comic, described below.
Transcript

[A 2x2 chart where each of the four quadrants contains five silhouettes. These depict various animals, a few objects, and a human. Above each column and to the left of each row there are a label:]

[Left column:] Are dinosaurs

[Right column:] Are not dinosaurs

[Upper row:] Seem like dinosaurs

[Lower row:] Don't seem like dinosaurs

[Here follows a list of what are in each of the four quadrants:]

[Top left (seem like dinosaurs, are dinosaurs):]

[Stegosaurus, triceratops, tyrannosaurus, diplodocus, and velociraptor.]

[Top right (seem like dinosaurs, are not dinosaurs):]

[Mosasaur, quetzalcoatlus, dimetrodon, plesiosaur, and pteranodon.]

[Bottom left (don't seem like dinosaurs, are dinosaurs):]

[Penguin, egret, falcon, pigeon, and ostrich.]

[Bottom right (don't seem like dinosaurs, are not dinosaurs):]

[Squirrel, stapler, bicycle, human (here depicted as Cueball), and potted plant.]


(Sourced from explainxkcd.com)

Title text:Staplers are actually in Pseudosuchia, making them more closely related to crocodiles than to dinosaurs.


ExplainOriginal