The early Eocene flora of Horsefly, British Columbia, Canada and its phytogeographic significance Kathleen B. Pigg , Steven R. Manchester , Melanie L. Devore 2023 | volume 79 | issue 2 | pages 126–143 PDF
Trochodendraceous fruits and foliage in the Miocene of western North America Steven R. Manchester , Kathleen B. Pigg , Melanie L. Devore 2018 | volume 74 | issue 1-2 | pages 45–54 PDF
