The Mother-of-all-Dead Zones: “Fossil site shows impact of early Jurassic’s low oxygen oceans”

Guest post by David Middleton Science News Fossil site shows impact of early Jurassic’s low oxygen oceans Date: July 15, 2017 Source: University of Texas at Austin Summary: Using a combination of fossils and chemical markers, scientists have tracked how a period of globally low ocean-oxygen turned an Early Jurassic marine ecosystem into a stressed…