Mississippian (Lower Carboniferous) miospores from the Cuyahoga and Logan formations of northeastern Ohio, USA

Well-preserved Lower Mississippian (Dinantian) miospore assemblages have be en recovered from the upper Cuyahoga Formation (type Wooster Member) and ov erlying lower Logan Formation (Byer Member) at two localities in Wayne Coun ty, northeastern Ohio, USA. All six samples were productive and yielded ass emblages that represent the middle Tournaisian Spelaeotriletes pretiosus-Ra istrickia clavata (PC) Miospore Biozone of Western Europe including a new s pecies of trilete, acamerate miospore, Mooreisporites streelii, described f rom the Wooster Shale. Significant numbers of latest Devonian and earlier C arboniferous miospores are reworked into all assemblages. The palynological evidence is consistent with a late Kinderhookian age for most of the Cuyah oga Formation, including its well known ammonoid fauna. However, the positi on of the boundary between the Kinderhookian and Osagean Series remains unc ertain.