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A new trilobite species of Hemisphaerocoryphe from the Arenig of the St. Petersburg area,Russia
Anew trilobite species Hemisphaerocoryphe Arenig St. Petersburg area
2009/12/3
Hemisphaerocoryphe platinflata n.sp. is described from the Lower Middle Ordovician of north-western Russia (Upper Volkhov Stage). This species expands the stratigraphical occurrence of the genus downw...