The acritarch genus Polygonium, Vavrdová emend Sarjeant and Stancliffe 1994: a reassessment of its constituent species

The acritarch genus Polygonium, although of simple morphology, presently comprises forty-two species. The genus is re-evaluated and seven morphological groups are distinguished. Twenty-two species are retained, fourteen others being treated as junior synonyms. Two species are placed in the new genus Quantostrobilium, one returned to Buedingiisphaeridium and three reallocated to Dorsennidium.