Dinosaur time

The dinosaur calendar

This smaller calendar looks only at dinosaur time, from first dinosaur evidence to the extinction event.

One dinosaur year

In this smaller calendar, the extinction sits at Dec 31 23:59:59. That makes the long dinosaur story easier to compare with the much larger cosmic year.

  1. Jan 1

    First dinosaur evidence

    The dinosaur year begins with the first dinosaur evidence used in this calendar.

    Cosmic calendar: Dec 25

  2. Dec 31 23:59:59

    K-Pg extinction

    The dinosaur year ends with the extinction event, placed at the final second of this smaller calendar.

    Cosmic calendar: Dec 30

Where this path goes next

After the dinosaur pathway, the larger calendar returns to December 31: humans near midnight, then the Pale Blue Dot perspective.

Image credit: NASA/JPL-Caltech. Background source: Age-Defying Star.