About the Authors

Tatsuya Hayashi

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Project administration, Visualization, Writing – original draft, Writing – review & editing

t.hayashi.diatom@gmail.com

Affiliations Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan, Mifune Dinosaur Museum, Mifune, Kumamoto, Japan

William N. Krebs

Roles Conceptualization, Validation, Writing – original draft, Writing – review & editing

Affiliation Independent Researcher, Round Top, Texas, United States of America

Megumi Saito-Kato

Roles Data curation, Formal analysis, Funding acquisition, Validation, Writing – review & editing

Affiliation Department of Geology and Paleontology, National Museum of Nature and Science, Amakubo, Tsukuba, Ibaraki, Japan

Yoshihiro Tanimura

Roles Investigation, Resources, Supervision, Writing – review & editing

Affiliation Department of Geology and Paleontology, National Museum of Nature and Science, Amakubo, Tsukuba, Ibaraki, Japan

Competing Interests

W.K. has a financial interest in PaleoStrat LLC. This does not alter our adherence to PLOS ONE policies on sharing data and materials.