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Comparative major-group palynological composition of samples from three sites. LycB sites from the Markley Formation, Late Pennsylvanian (Looy and Hotton 2014). USGS 9999, USNM 40600, and NPL 53178B from Sanzenbacher from the early Permian Archer City Formation (DiMichele et al. 2018). USNM 40069, 40070, and 40071 from Kola Switch
