Nomenclatural act

Plant Fossil Names Registry Number: PFN003197
Act LSID: urn:lsid:plantfossilnames.org:act:3197
Petalophyllites speirsiae sp. nov.
Hoffman, G. L. & Crandall-Stotler, B. J. (2023): Petalophyllites speirsiae gen. et sp. nov. (Marchantiophyta: Fossombroniales), a fossil liverwort gametophyte from the Paleocene of Alberta, Canada. – Botany 101(10): 462–470.