Citations:circumpolloid


 * 1985, Eleanora I. Robbins, “Palynostratigraphy of Coal-Bearing Sequences in Early Mesozoic Basins of the Eastern United States”, article 5 in Proceedings of the Second U.S. Geological Survey Workshop on the Early Mesozoic Basins of the Eastern United States (U.S. Geological Survey Circular CMXLVI), eds. Gilpin R. Robinson Jr and Albert J. Froelich, page 27/2:
 * Table 5.1 lists 63 species of palynomorphs that were identified in the coal-bearing sequences: 18 trilete and monolete spore species; 21 bisaccate pollen species; 13 monosaccate, circumpolloid, and inaperturate pollen species; and 11 monosulcate and plicate pollen species.
 * 1989, American Geophysical Union, Sedimentation and Basin Analysis in Siliciclastic Rock Sequences II, page 27/1:
 * The most prevalent palynomorphs in the coal include Patinasporites-complex (monosaccate conifer pollen), Pretricolpipollenites ovalis Danzé-Corsin and Laveine (a sulcate gymnosperm pollen grain), Camerosporites pseudoverrucatus Scheuring (a primitive circumpolloid), and Pseudenzonalasporites summus Sheuring (Traverse, 1986).