Palynology of the garner formation (Strawn series) of north‐central Texas

Abstract

Ten samples collected from one outcrop of the Thur‐ber Coal (Garner Formation, Strawn Series) of north‐central Texas contain an overwhelming number of Thymospora pseudothiessenii. Among other genera, Lycospora, Calamospora, and Florinites increase in percentage near the top of the coal, whereas Triquitrites and Punctatisporites decrease in abundance. The assemblage is comparable to the Lower Carbondale (Early Westphalian D) miospore assemblages occurring in the Bevier Coal of Oklahoma, Kansas and Missouri, and the Lowell Coal of Illinois. The Mingus Shale, overlying the Coal, is primarily characterized by Florinites and Endosporites, and can be differentiated palynologically from the overlying East Mountain Formation. The assemblage in the shale is comparable to that of the Linopteris obliqua Zone, Maritime Provinces, Canada, of Early Westphalian D age.