Fig. 3From: Visualizing macroevolutionary timescales: students’ comprehension of different temporal representations in an animationThe three timelines used in animations C and D. The uppermost is timeline 1, which looks the same in all of the animations. The two underlying timelines (2 and 3), shown below, represent fractions of timeline 1 but expressed in successively larger scales. Timelines 2 and 3 emerged as the current time cursor approached 2.3 and 0.23 Ma respectively before present dayBack to article page