A NEW LYGINOPTERID POLLEN ORGAN WITH ALVEOLATE POLLEN EXINES |
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| Authors: | Benton M. Stidd Michael O. Rischbieter Tom L. Phillips |
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| Affiliation: | 1. Department of Biological Sciences, Western Illinois University, Macomb, Illinois, 61455;2. Department of Plant Biology, University of Illinois, Urbana, Illinois, 61801 |
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| Abstract: | A new lyginopterid pollen organ is described based upon specimens occurring in a single coal ball from the Providence, Kentucky locality. Seven to nine beaked sporangia are fused together at their proximal ends forming a common synangial chamber; synangia are joined together in clusters of two or three. In situ prepollen is similar to Cyclogranisporites and Verrucosisporites sporae dispersae. The thick exine has a lamellate nexine and a prominent alveolate sexine. |
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