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†Leiosphaeridia exasperata Johnson 1985
urn:lsid:organismnames.com:name:499262
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328
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†Leiosphaeridia exasperata Johnson 1985
Johnson 1985. Early Silurian palynomorphs from the Tuscarora Formation in central Pennsylvania and their paleobotanical and geological significance. Review of Palaeobotany and Palynology, 45(3-4) 1985: 307-360