Animals

Haikouichthys is an extinct fish-like craniate that lived in what is now China approximately 518 million ago

Animals

Cephalaspis, a jawless fish

Life

Diorama of Ediacaran sealife displayed at the Smithsonian Institution.

History

Columbia, about 1,590 Ma

History

Landmass positions near the end of the Precambrian

Universe

The lookback time of extragalactic observations by their cosmological redshift up to z=20

Philosophy

The statue The Thinker by Auguste Rodin is a symbol of philosophical thought