Fossil site shows impact of early Jurassic's low oxygen oceans
University at Austin, Austin, Texas
https://www.eurekalert.org/pub_releases/2017-07/uota-fss071017.php
Rowan C. Martindale and MartinAberhan, 2017, Response of
macrobenthic communities to the Toarcian Oceanic Anoxic Event
in northeastern Panthalassa (Ya Ha Tinda, Alberta, Canada)
Palaeogeography, Palaeoclimatology, Palaeoecology
Volume 478, 15 July 2017, Pages 103-120
http://www.sciencedirect.com/science/article/pii/S0031018217300160
Yours,
Paul H.