1. Environmental Science Department American University Washington DC USA
2. Department of Paleobiology MRC‐121 National Museum of Natural History Washington DC USA
3. Institute of Marine Science University of California Santa Cruz Santa Cruz CA USA
4. Department of Mineral Sciences National Museum of Natural History Washington DC USA
5. Oregon State University College of Earth, Ocean, and Atmospheric Sciences Corvallis OR USA
6. Ocean Ecology Laboratory NASA Goddard Space Flight Center Greenbelt MD USA