Found in 1909, ancestors of nearly all living phyla are found in these specimens of the Middle Cambrian period.  
Created by mudslides near a Laurentian shelf, anoxic conditions allowed the preservation of soft features and bizarre forms of such creatures as Hallucigenia and Anomalocaris.  Found in 1909, ancestors of nearly all living phyla are found in these specimens of the Middle Cambrian period.  For ten points, name this Canadian fossil bed, the subject of Stephen Jay Gould's book Wonderful Life.
Created by mudslides near a Laurentian shelf, anoxic conditions allowed the preservation of soft features and bizarre forms of such creatures as Hallucigenia and Anomalocaris.  
Burgess Shale