Among all established geological periods, the Ediacaran Period is the longest, lasting from 635 Ma to 541 Ma. It is within this 94 million years of geological history that the Earth was transformed from a world dominated by microbes to one increasingly influenced by animal activities. Important evolutionary innovations occurred in the Ediacaran Period, including the rise of macroscopic animals, complex ecological interactions, and metazoan biomineralization. Resolving the causes and consequences of these biological innovations is a major focus of recent geobiological investigations. However, without a solid geological time framework, Ediacaran workers are facing significant challenges in assembling the pieces of the puzzle from different parts of the world. To develop a better understanding of Ediacaran time and life, a group of 25 geologists, geochemists, sedimentologists,and paleontologists gathered together to examine the terminal Ediacaran Nama Group at a field workshop sponsored by IGCP 587“Identity, Facies and Time: The Ediacaran (Vendian) Puzzle” and theICS Subcommission on Ediacaran Stratigraphy.