Northern Arizona Univ, Department of Geology, Flagstaff, AZ 86011, United States ; Northern Arizona Univ, Environmental Sciences, Flagstaff, AZ 86011, United States
Northern Arizona Univ, Environmental Sciences, Flagstaff, AZ 86011, United States
Northern Arizona Univ, Department of Geology, Flagstaff, AZ 86011, United States
Northern Arizona Univ, Department of Geology, Flagstaff, AZ 86011, United States
Northern Arizona Univ, Department of Geology, Flagstaff, AZ 86011, United States
Queen's Univ, Department of Biology, Kingston, ONT K7L 3N6, Canada
Department of Earth and Environment, Mount Holyoke College, South Hadley, MA 01075, United States