Complex sentence: The species was reviewed by paleobotanists Jack A. Wolfe of the United States Geological Survey, Denver office and Toshimasa Tanai of Hokkaido University., in a 1987 paper in the "Journal of the Faculty of Science, Hokkaido University".
Split into simpler sentences: The species was reviewed by paleobotanists Jack A. Wolfe of the United States Geological Survey, Denver office and Toshimasa Tanai of Hokkaido University. Wolfe and Tanai published the review in a 1987 paper in the "Journal of the Faculty of Science, Hokkaido University".